Botulinum Research Articles

The Use of Botulinum Toxin Type A in Medically Refractory Pediatric Patients With Chronic Daily Headaches and Its Impact on the Quality of Life.

Background: Chronic migraine in children has been a challenging condition to treat, prompting the investigation of alternative therapies. This retrospective single-center chart review aimed to evaluate the efficacy and safety of Botox injections for managing chronic migraine in children. Methods: The study included children with chronic daily headaches and chronic migraine who were medically refractory to previous treatments at OSF Healthcare/Illinois Neurological Institute, Peoria, between 2015 and 2021. Botox injections were administered quarterly following a specific protocol. Data were obtained from electronic medical records by manual review. Results: Twenty-four patients met the inclusion criteria (median age 15.4 years, 87% female). Comorbidities included depression (41.6%) and sleep disturbances (33.2%). Prior to Botox treatment, patients had been tried on a median number of 5 (interquartile range [IQR] 4, 7) medications. Botox injections resulted in a significant reduction in headache frequency, with a mean difference (6 months vs pretreatment) in the Headache Impact Test (HIT 3) scores of -19.6 (95% CI -24.8, -14.3), P < .001, and mean difference in the Migraine Disability Assessment (MIDAS) scores of -50.8 (95% CI -62.6, -39.0, P < .001). Subjective improvements included mood enhancement (13/24, 54.2%) and improved concentration (12/24, 50%). Treatment-related side effects were reported by 5/24 (20%) of patients and were mostly mild to moderate. Conclusions: Botox injections offer a promising therapeutic option for managing chronic migraine in children who have not responded to traditional medications. Future controlled trials and long-term follow-up studies are needed to further evaluate Botox treatment's benefits and adverse effects in children with chronic migraine.

Incobotulinum Toxin-A in Professional Musicians with Focal Task-Specific Dystonia: A Double Blind, Placebo Controlled, Cross-Over Study.

Musician's focal task-specific dystonia is a complex disorder of fine motor control, with incomplete understanding of its etiology. There have been relatively few trials of botulinum toxin in upper limb task-specific dystonia, and prior studies have yielded variable results, leading to skepticism regarding the utility of this approach in elite performers. We conducted a double-blind, placebo-controlled, randomized, cross-over study of incobotulinum toxin-A in 21 professional musicians with focal upper extremity task-specific dystonia affecting performance on their instrument, using a novel paradigm of initial injections followed by booster injections at two- and four-week intervals. The primary outcome measure was the change in blinded dystonia rating of the active arm by two expert raters using a Clinical Global Impression numeric scale at week 8 compared to enrollment. 19 men and 2 women with musicians' dystonia were enrolled over a six-year period. Nineteen patients completed the study. Analysis of the primary outcome measure in comparison to baseline revealed a change in dystonia severity of P = 0.04 and an improvement in overall musical performance of P = 0.027. No clinically significant weakness was observed, and neutralizing antibodies to toxin were not found. Despite its small sample size, our study demonstrated a statistically significant benefit of incobotulinum toxin-A injections as a treatment for musicians' task-specific dystonia. Tailoring the use of toxin with booster injections allowed refinement of dosing strategy and outcomes, with benefits that were meaningful to patients clearly visible on videotaped evaluations. In addition to its application to musicians' dystonia, this approach may have relevance to optimize application of botulinum toxin in other forms of focal dystonia such as blepharospasm, cervical dystonia, writer's cramp, and spasmodic dysphonia.

Comparison of Treatment Patterns in Patients with Migraine Initiating Calcitonin Gene-Related Peptide Monoclonal Antibodies: A Retrospective Real-World US Study.

Calcitonin gene-related peptide monoclonal antibodies (CGRP mAbs) are indicated for migraine prevention in the United States. Limited data comparing real-world treatment patterns for CGRP mAbs are available. To compare the treatment patterns among patients with migraine initiating galcanezumab, fremanezumab, and erenumab. This retrospective study included adult patients with one or more claims for a self-injectable CGRP mAb (galcanezumab, fremanezumab, or erenumab), with continuous enrollment in medical and pharmacy benefits for 12 months pre-index and 6 and 12 months post-index using MerativeTM MarketScan® Commercial and Medicare databases from May 2017 through March 2021. Propensity-score matching was used to address confounding by observed covariates. Outcomes analyzed included proportion of days covered (PDC), medication-possession ratio (MPR), persistence (≤60-day gap), treatment discontinuation, and switch to a non-index drug. Descriptive X2 and t-test analyses were conducted. At the 12-month follow-up, matched galcanezumab and fremanezumab cohorts each comprised 2674 patients and the galcanezumab and erenumab cohorts 3503 each. The mean (SD) PDC and MPR were both 0.6 (0.3) across all cohorts. Based on PDC ≥0.80 and MPR ≥0.80, a greater proportion of galcanezumab vs fremanezumab (46.2% vs 43.7%, p=0.053; 46.8% vs 44.3%, p=0.053) and galcanezumab vs erenumab (46.2% vs 44%, p=0.156; 46.7% vs 44.5%, p=0.262), respectively, initiators were adherent. Compared to galcanezumab, fremanezumab (248.0 days vs 236.5 days, p=0.001), and erenumab (247.8 days vs 241.7 days, p=0.061) initiators had lower mean persistence. Galcanezumab initiators were less likely to discontinue treatment than fremanezumab (47.8% vs 51.7%, p=0.005) and erenumab (47.7% vs 50.2%, p=0.040) initiators. Across cohorts, most switchers initiated onabotulinum toxin A as subsequent treatment. Similar results were observed for 6-month follow-up cohorts. Patients with migraine who initiated treatment with galcanezumab showed higher persistence and lower treatment discontinuation rates than those initiating either fremanezumab or erenumab.

Proximity of Percutaneous Tibial Nerve Stimulation Needle Insertion to Surrounding Anatomic Structures: A Cadaveric Study

(Abstracted from Am J Obstet Gynecol 2023;229:430.e1–430.e6) Each year, spending on treatment of overactive bladder and urinary urgency sans incontinence uses at least $65.9 billion. Although many treatments for such conditions exist, the third line of medication is percutaneous tibial nerve stimulation (PTNS) for patients who wish to avoid onabotulinum toxin treatment and decline implanted devices.

A Comparative Study Between Intradermal Incobotulinum Toxin A Reconstituted With Normal Saline or Lidocaine In the Treatment of Enlarged Facial Pores

A Comparative Study Between Intradermal Incobotulinum Toxin A Reconstituted With Normal Saline or Lidocaine In the Treatment of Enlarged Facial Pores

Treatment of Severe Trismus during Locked-In Syndrome Secondary to Central Pontine Myelinolysis Using Onabotulinum Toxin-A: Case Report

Trismus in adults has a wide range of known causes, though few cases have ever been reported secondary to central pontine myelinolysis (CPM). This report describes a case of severe trismus without clear etiology successfully treated with onabotulinum toxin-A following development of CPM.

Technical aspects of performing laparoscopic hernioplasty in the treatment of large ventral hernias

Laparoscopic hernioplasty is a promising treatment option for ventral hernias. The technique of intraperitoneal mesh placement (IPOM) is the most extensively studied and widely used for the closure of a defect during laparoscopic hernia repair. The large size of the defect and its diameter exceeding 10 cm are limiting factors in the selection of minimally invasive techniques for hernioplasty. The process of suturing the hernia prior to the placement of the mesh, as well as the technique used to fix it, show controversial results in terms of postoperative quality of life and the risk of recurrence. Objective — to study the technical aspects of performing laparoscopic prosthetic hernioplasty using the IРOM technique for the surgical treatment of patients with large primary ventral hernias (PVH) and postoperative incisional ventral hernias (IVH). Materials and methods. The study included a total of 84 patients who were undergoing treatment at the clinical base of the Department of General Surgery No. 2 of Bogomolets National Medical University. There were 51 (60.7%) women and 33 (39.3%) men. The average age was 58.73±10.9 years. All patients were operated on for large ventral hernias. Of these, 52 (61.9%) patients had surgery for PVH (umbilical hernia, line alba hernia), while 32 (38.1%) — for IVH. In 56 (66.7) patients, the width of the hernia defect was &gt; 10 cm, of which 24 (28.6%) patients had PVH. In these patients, 4 weeks before surgery, 100 units of botulinum toxin type A (BTA) were injected intramuscularly into the muscles of the anterior abdominal wall in accordance with the methodology developed in the clinic. All patients underwent laparoscopic prosthetic hernioplasty with IPOM under general combined anesthesia. Control examinations of patients were carried out 2 weeks, 1 month, 6 months, and 1 year after the operation. Results. All patients underwent IPOM, while 38 (45.2%) patients underwent laparoscopic IPOM with suturing of the defect, 36 (42.9%) patients underwent IPOM with suturing the hernia defect before placing the mesh (IPOM+), and 10 (11.9%) patients underwent IPOM without suturing the defect. 32 (38.1%) patients were aged 65 years, including 10 patients who did not undergo suturing of the defect before the mesh placement. After the injection of BTA, the number of patients with a defect width of ≥10 cm decreased to 15 (17.8%). All of these patients had a defect smaller than 15 cm. The average duration of surgery for IPOM without hernia suturing was 60.00±11.30 min; for IPOM with laparoscopic suturing, it was 108.16±40.29 min; for IPOM+ with open suturing, it was152.08±40.64 min. The average length of stay in the hospital after surgery was higher in the group of patients who underwent hernioplasty using the IPOM+ technique compared to other techniques (p &lt;0.001). In the early postoperative period, the complication rate was 13.1%; all cases were classified as minor (Grade I, II, IIIa) according to the Clavien–Dindo classification. Conclusions. Laparoscopic hernioplasty using the IPOM is a safe and reliable method for large ventral hernia repair. Administering preoperative BTA injections enables the reduction of the defect and facilitates the execution of laparoscopic hernioplasty in patients with a primary hernia size of ≥10 cm.

Effect of botulinum toxin type A on muscular temporomandibular disorder: A systematic review and meta-analysis of randomized controlled trials.

Botulinum toxin type A (BTX-A) is increasingly used to manage painful temporomandibular disorders (TMD). However, the effect of BTX-A on muscular TMD remains unclear. To assess the efficacy, safety and optimal dose of BTX-A for treating TMD. We conducted systematic literature searches in MEDLINE, Embase, Web of Science, ClinicalTrials.gov and Cochrane Library until March 2023. We extracted data from randomized controlled trials (RCTs) that evaluated the efficacy and safety of BTX-A in treating muscular TMD. We performed a meta-analysis using a random-effects model. Fifteen RCTs involving 504 participants met the inclusion criteria. BTX-A was significantly more effective than placebo in reducing pain intensity, as measured on a 0-10 scale, at 1 month (MD [95% CI] = -1.92 [-2.87, -0.98], p < .0001) and 6 months (MD [95% CI] -2.08, [-3.19 to -0.98]; p = .0002). A higher dosage of BTX-A (60-100 U bilaterally) was associated with a greater reduction in pain at 6 months (MD [95% CI] = -2.98 [-3.52, -2.44]; p < .001). BTX-A also resulted in decreased masseter muscle intensity (μV) (MD [95% CI] = -44.43 [-71.33, -17.53]; p = .001) at 1 month and occlusal force (kg) at 3 months (MD [95% CI] = -30.29 [-48.22 to -12.37]; p = .0009). There was no significant difference in adverse events between BTX-A and placebo. BTX-A is a safe and effective treatment for reducing pain and improving temporomandibular muscle and joint function in muscular TMD patients. A bilateral dose of 60-100 U might be an optimal choice for treating muscular TMD pain.

Long term safety outcomes and continuation rates of repeated Intravesical Botulinum Toxin A injections for Detrusor Overactivity: 16 year’s experience of a Tertiary Centre in the UK

Introduction:Overactive bladder (OAB) affects 27% of women in the UK with an adverse impact on quality of life. Medical treatment with anticholinergics has a high discontinuation rate due to side effects. OnabotulinumtoxinA (BOTOX ®) is an established treatment for refractory OAB, although there are little published data regarding safety with long term use. Objective:To report the long-term safety and continuation rates of intravesical Botox for OAB. Methods:This was a retrospective cohort study of patients treated with botulinum toxin A for OAB in a tertiary centre from 2007–2023. Data were collected retrospectively from medical records. Results:132 patients were identified, with a total of 574 episodes of intravesical Botox. Mean age at first treatment was 55 years. After 1st Botox treatment, 21% of patients developed urinary tract infections. Clean intermittent self-catheterisation (CISC) was performed in 33% of patients, 5% of whom were performing CISC prior to treatment. The range of number of Botox treatments per patient was 1–18; 74% had more than one treatment. 52% of patients were lost to follow-up and 30% are ongoing patients. Recurrent UTIs developed in 23%. Conclusion:Repeated Botox injections appear to be a safe form of treatment for refractory OAB. Long term complications include recurrent UTIs, which affects 1 in 4 women, and voiding dysfunction, which affects 1 in 5. Only 1 in 3 women continue long term Botox treatment.

Treatment Options for Posttraumatic Headache: A Current Review of the Literature.

We evaluate evidence-based treatments for posttraumatic headache (PTH), a secondary headache disorder resulting from traumatic brain injury (TBI), comprising nearly 4% of all symptomatic headache disorders. Utilizing recent publications, we aim to inform clinicians of current treatment methods. There is limited research on PTH treatment. A randomized controlled trial (RCT) of metoclopramide with diphenhydramine for acute PTH found that the treatment group (N = 81) experienced more significant pain improvement than placebo by 1.4 points. For persistent PTH, an open-label study of erenumab (N = 89) found that 28% of participants reported ≥ 50% reduction in moderate-to-severe headache days, but an RCT of fremanezumab showed a non-significant reduction in moderate-to-severe headache days. A randomized crossover study of 40 patients with persistent PTH found that onabotulinum toxin-A decreased cumulative number of headaches/week by 43.3% in the treatment group and increased by 35.1% among placebos. In a study of military veterans with severe posttraumatic stress disorder and persistent/delayed onset PTH (N = 193), patients who received Cognitive Behavioral Therapy reported significant improvements in headache-related disability compared to usual care (aggregate mean HIT-6, -3.4). A transcranial magnetic stimulation (N = 24) study found that 58% of participants with mild TBI-related headache experienced a 50% reduction in headache frequency. New studies indicate promise in improving clinically important outcomes of PTH. However, more research is necessary to determine the optimal treatment and whether combining pharmacologic and nonpharmacologic treatment versus a single modality is more effective.

Robotic gait training and botulinum toxin injection improve gait in the chronic post-stroke phase: A randomized controlled trial

BackgroundImproving walking ability is one of the main goals of rehabilitation after stroke. When lower limb spasticity increases walking difficulty, botulinum toxin type A (BTx-A) injections can be combined with non-pharmacologic interventions such as intensive rehabilitation using a robotic approach. To the best of our knowledge, no comparisons have been made between the efficacy of robotic gait training and conventional physical therapy in combination with BTx-A injections. ObjectiveTo conduct a randomized controlled trial to compare the efficacy on gait of robotic gait training versus conventional physiotherapy after BTx-A injection into the spastic triceps surae in people after stroke. MethodThirty-three participants in the chronic stroke phase with triceps surae spasticity inducing gait impairment were included. After BTx-A injection, participants were randomized into 2 groups. Group A underwent robotic gait training (Lokomat®) for 2 weeks, followed by conventional physiotherapy for 2 weeks (n = 15) and Group B underwent the same treatment in reverse order (n = 18). The efficacy of these methods was tested using the 6-minute walk test (6MWT), comparing post-test 1 and post-test 2 with the pre-test. ResultsAfter the first period, the 6MWT increased significantly more in Group A than in Group B: the mean difference between the interventions was 33 m (95%CI 9; 58 p = 0.007; g = 0.95), in favor of Group A; after the second period, the 6MWT increased in both groups, but the 30 m difference between the groups still remained (95%CI 5; 55 p = 0.019; g = 0.73). ConclusionTwo weeks of robotic gait training performed 2 weeks after BTx-A injections improved walking performance more than conventional physiotherapy. Large-scale studies are now required on the timing of robotic rehabilitation after BTx-A injection.

Intrarectal injections of botulinum toxin versus placebo for the treatment of urge faecal incontinence in adults (FI-Toxin): a double-blind, multicentre, randomised, controlled phase 3 study

Non-randomised studies assessing intrarectal botulinum toxin type A (BoNTA) injections for faecal incontinence are promising. We aimed to evaluate the efficacy of BoNTA for the treatment of faecal incontinence in a randomised study. In this randomised, double-blind, placebo-controlled study, we included adult patients who had at least one urgency or faecal incontinence episode per week for at least 3 months and who had experienced a failure of conservative or surgical treatment from eight French specialist hospital units with the skills to manage patients with faecal incontinence. Patients were randomly assigned (1:1) by a central web form to receive intrarectal submucosal injections of either 200 units of BoNTA (Botox; Allergan, Irvine, CA, USA; BoNTA group) or an equivalent volume of saline (placebo group), stratified by Cleveland Clinic Severity scores (CCS score; ≥12 or <12). Patients, investigators, study site staff, and sponsor personnel were masked to treatment allocation up to the 6-month visit. The primary endpoint was the number of episodes of faecal incontinence and urgency per day assessed using 21-day patient bowel diaries 3 months after the treatment. The primary analysis was performed using a modified intention-to-treat (mITT) approach (ie, in all the randomised patients who had received a treatment) with adjustment for baseline faecal incontinence and urgency episodes. After the final data collection at 6 months after injections, patients were unmasked and offered the BoNTA treatment if they were in the placebo group (rescue therapy) without masking, with an additional 6 months of safety follow-up. This trial is registered with ClinicalTrials.gov, number NCT02414425. Between Nov 25, 2015, and Nov 25, 2020, we randomly assigned 200 patients to receive either BoNTA (n=100) or placebo (n=100) injections. Due to withdrawals before the injections, 96 patients were included in the BoNTA group and 95 patients were included in the placebo group (mITT analysis). The mean number of faecal incontinence and urgency episodes per day in the BoNTA group decreased from 1·9 (SD 2·2) at baseline to 0·8 (1·8) at 3 months after the injections, and from 1·4 (1·1) to 1·0 (1·0) in the placebo group, with a baseline-adjusted mean group difference at 3 months estimated at -0·51 (95% CI -0·80 to -0·21, p=0·0008). No serious treatment-related adverse events were reported in the trial. The most frequently reported non-serious adverse event (treatment related or not) following the BoNTA or placebo injections was constipation (reported in 68 [40%] of 169 patients who received the BoNTA injections and 38 [40%] of 95 patients who received placebo injections). BoNTA injections are an efficacious treatment for urge faecal incontinence. Further research will define the optimum selection criteria, dose, site of injection, re-injection frequency, and long-term results. General Direction of Healthcare (French Ministry of Health).

Pilot Study of Microfocused Ultrasound, Incobotulinum Toxin, and Calcium Hydroxyapatite in Triple Therapy for Skin Tightening after Weight Loss

Pilot Study of Microfocused Ultrasound, Incobotulinum Toxin, and Calcium Hydroxyapatite in Triple Therapy for Skin Tightening after Weight Loss

Investigation of intradetrusor onabotulinum toxin A efficacy and safety in older adults with urge urinary incontinence.

Intradetrusor onabotulinum toxin A (BTX-A) has been demonstrated to be an effective treatment option for overactive bladder (OAB). However, concerns about frailty and frequent injections may deter its use in the elderly. This study aims to assess the safety, efficacy, and treatment duration of BTX-A in managing OAB in elderly women. We retrospectively reviewed female patients aged 70 and above who were diagnosed with OAB with predominant urge urinary incontinence and underwent intravesical BTX-A treatment. We collected demographic and clinical data, with repeat BTX-A injections re-administered upon patient-reported symptom recurrence. Twenty-one female patients, median age 77 (range 71-92), were included. The median time between the first and second injection was 185 (84-448) days, 186 (105-959) days between the second and third injection, and increased to 206.5 (84-256) days between the third and fourth injection. However, the median interval trended downward after the fourth injection (Fig. 1). Patients with four or more injections had a shorter median interval between injections, 154days, compared to those with fewer injections, 210days. Two patients (6.9%) experienced urinary retention after the initial treatment, with 1 (2.2%) among a total of 46 subsequent treatments (Table 3). There were ten (13.3%) episodes of UTIs within 2weeks of treatment. Patients reported improvement in symptoms following 93.3% of the injections. This real-world study demonstrates that BTX-A effectively controls OAB symptoms in elderly women, with just two injections annually. BTX-A appears safe and efficacious for treating OAB in elderly females.

Botulinum toxin type A ameliorates rat dorsal root ganglia neuron pyroptosis in postherpetic neuralgia by upregulating cathelicidin antimicrobial peptide to inhibit neutrophil elastase.

Botulinum toxin type A (BoNT/A) has exhibited efficacy in postherpetic neuralgia (PHN) treatment, and this study aims to uncover its underlying mechanisms. Resiniferatoxin (RTX)-induced PHN rats were given BoNT/A. Rat postoperative pain behaviors were assessed by Von Frey test. Cleaved-synaptosomal protein 25 kDa (cl-SNAP-25) or cathelicidin antimicrobial peptide (CAMP) expression in rat dorsal root ganglia (DRG) was detected by immunofluorescence or immunohistochemistry. Healthy rat-derived DRG neurons were transfected, incubated with lipopolysaccharides (LPS)/adenosine 5'-triphosphate (ATP) to stimulate pyroptosis and treated with BoNT/A. The CCK-8, Western blot, ELISA, and qRT-PCR were used to assess the viability, levels of pyroptosis-related proteins proinflammatory cytokine levels, as well as CAMP and ELANE mRNA levels. BoNT/A (30 U/kg) promoted cl-SNAP-25 expression in rat DRG and reversed RTX-induced decrease of rat paw withdrawal thresholds and CAMP expression and increase of pyroptosis-associated protein and inflammatory factor expression in rat DRG. CAMP interacted with ELANE in rat DRG neurons. BoNT/A attenuated LPS/ATP-stimulated inhibition of viability and CAMP expression and upregulation of inflammatory mediators, pyroptosis-related proteins, and ELANE expression in rat DRG neurons, which was counteracted by CAMP silencing. However, ELANE knockdown offset the effect of CAMP silencing in LPS/ATP/BoNT/A-treated rat DRG neurons. On the whole, BoNT/A alleviates rat DRG neuron pyroptosis during PHN by upregulating CAMP to inhibit ELANE.

Botox Treatment: A Comprehensive Review

An exotoxin called botulinum toxin, or Botox, is isolated from Clostridium botulinum. It prevents the cholinergic nerve end plates from releasing acetylcholine, which causes the innervated muscles or glands to become inactive. Botox has proven to be effective for improving facial cosmetics, but new research has shown that it can also be used to treat a variety of surgical and medical disorders that aren't cosmetic. This article examines the available data regarding Botox use for non-cosmetic head and neck problems too. Because of its quick, distinct and long-lasting outcomes for the reduction of facial fine lines and wrinkles and cosmetic rejuvenation, injectable treatments like botulinum toxin are gaining popularity. Excessive sweating or hyperhidrosis can also be treated with Botox. Botox treatment can reduce the frequency of migraines, with chronic migraines requiring treatment in every three months. Additionally, Botox can help in reducing urinary incontinence caused by an overactive bladder. However, the usage of pure botulinum toxin dosages employed by certified healthcare professionals are strictly to be done under the stringent medical guidelines. When handled properly, botulinum toxins utilized in medicine are non- hazardous.

Competing treatments for migraine: a headache for decision-makers

BackgroundMigraine is the world’s second most common disabling disorder, affecting 15% of UK adults and costing the UK over £1.5 billion per year. Several costly new drugs have been approved by National Institute for Health and Care Excellence.AimTo assess the cost-effectiveness of drugs used to treat adults with chronic migraine.MethodsWe did a systematic review of placebo-controlled trials of preventive drugs for chronic migraine. We then assessed the cost-effectiveness of the currently prescribable drugs included in the review: Onabotulinum toxin A (BTA), Eptinezumab (100mg or 300mg), Fremanezumab (monthly or quarterly dose), Galcanezumab or Topiramate, each compared to placebo, and we evaluated them jointly. We developed a Markov (state-transition) model with a three-month cycle length to estimate the costs and quality-adjusted life years (QALYs) for the different medications from a UK NHS and Personal Social Services perspective. We used a two-year time horizon with a starting age of 30 years for the patient cohort. We estimated transition probabilities based on monthly headache days using a network meta-analysis (NMA) developed by us, and from published literature. We obtained costs from published sources and applied discount rates of 3.5% to both costs and outcomes.ResultsDeterministic results suggest Topiramate was the least costly option and generated slightly more QALYs than the placebo, whereas Eptinezumab 300mg was the more costly option and generated the most QALYs. After excluding dominated options, the incremental cost-effectiveness ratio (ICER) between BTA and Topiramate was £68,000 per QALY gained and the ICER between Eptinezumab 300mg and BTA was not within plausible cost-effectiveness thresholds. The cost-effectiveness acceptability frontier showed that Topiramate is the most cost-effective medication for any amount the decision maker is willing-to-pay per QALY.ConclusionsAmong the various prophylactic medications for managing chronic migraine, only Topiramate was within typical cost-effectiveness threshold ranges. Further research is needed, ideally an economic evaluation alongside a randomised trial, to compare these newer, expensive CGRP MAbs with the cheaper oral medications.

Reconstituted and frozen botulinum toxin A is as effective and safe as fresh for treating axillary hyperhidrosis: A retrospective study.

The use of reconstituted and frozen left-over botulinum toxin A, for treatment of patients with axillary hyperhidrosis seems to be common practice in healthcare. Thus, the objective of this study was to investigate the efficacy and safety of frozen and thawed versus fresh reconstituted abobotulinum toxin (Dysport®) and onabotulinum toxin (Botox®) in the treatment of axillary hyperhidrosis. A retrospective study was conducted analysing efficacy and data from pre- and 24 weeks post-treatment questionnaires together with medical records of individuals with moderate to severe axillary hyperhidrosis. The patients had received fresh prepared botulinum toxin A in their right axilla while frozen and thawed botulinum toxin A had been administered in their left axilla. Treatment was conducted at our Hyperhidrosis Clinic, Umeå University Hospital, Sweden 2019-2021. Pre- and post-treatment questionnaires from 106 patients were analysed. The patients were 18 to 55 years old, with a mean age of 30.7 ± 9.9 years. No significant differences in patient-reported variables, Hyperhidrosis Disease Severity Scale and VAS 10-point scale, were found between the different preparations (frozen compared to fresh) for abobotulinum toxin and onabotulinum toxin, before treatment and at 6 months follow-up. Multivariable regression analysis resulted in no significant difference regarding side-effects between the preparations or brands of botulinum toxin. The findings of this study support our clinical experience that both abobotulinum toxin and onabotulinum toxin, reconstituted, frozen and thawed, seem to be as effective and safe as fresh prepared botulinum toxin when treating axillary hyperhidrosis. Our findings indicate that left-over preparations of abo- and onabotulinum toxins, stored and frozen for up to 6 months, is a cost-and time-effective way of handling botulinum toxin for treatment of axillary hyperhidrosis.

The Application of Botulinum Toxin in the Prophylactic Treatment of Migraine

Abstract Introduction: Migraine is a common disorder that affects about 2% of the general population, with a prevalence of 7% in men, 24% in women and 4% in children. Migraine is the fourth most disabling condition among women and the seventh most disabling worldwide. It is characterized by paroxysmal, throbbing headaches, often unilateral, accompanied by hypersensitivity to noise, light, nausea and vomiting. Migraine is divided into episodic and chronic, with chronic meaning headache for at least 15 days a month for more than 3 months, with 8 migraine days. Treatment includes non-pharmacological and pharmacological methods, but often ineffective and fraught with side effects. Chronic migraine can lead to significant disability. Material and methods: The purpose of this article is to discuss the treatment of migraine with botulinum toxin. Information was collected from the English-language databases Google Scholar, Scopus and PubMed. Results :Onabotulinum toxin A, approved for the treatment of migraine, works by blocking acetylcholine release at the synapse level, leading to reversible flaccid paralysis and blocking neurotransmitters such as CGRP. Injection sites include peri-cranial and neck muscles, allowing the toxin to be transported to the meninges and trigeminal ganglion. In recent years, injections near the cranial sutures have been preferred. BTX-A therapy has shown efficacy in reducing the frequency and severity of migraine pain, with fewer side effects compared to topiramate. Side effects, such as hematoma or ptosis, are rare and their frequency decreases with subsequent sessions. The cost of migraine treatment is high, but botulinum toxin reduces headache days and is cost-effective.

Refractory occipital neuralgia treatment with nerve decompression surgery: a case series

BackgroundThe management of refractory occipital neuralgia (ON) can be challenging. Selection criteria for occipital nerve decompression surgery are not well defined in terms of clinical features and best preoperative medical management.MethodsIn total, 15 patients diagnosed with ON by a board-certified, fellowship-trained headache specialist and referred to a plastic surgeon for nerve decompression surgery were prospectively enrolled. All subjects received trials of occipital nerve blocks (NB), at least three preventive medications, and onabotulinum toxin (BTX) prior to surgery before referral to a plastic surgeon. Treatment outcomes included headache frequency (headache days/month), intensity (0–10), duration (h), and response to medication/injectable therapies at 12 months postoperatively.ResultsPreoperatively, median headache days/month was 30 (20–30), intensity 8 (8–10), and duration 24 h (12–24). Patients trialed 10 (±5.8) NB and 11.7 (±9) BTX cycles. Postoperatively, headache frequency was 5 (0–16) days/month (p &amp;lt; 0.01), intensity was 4 (0–6) (p &amp;lt; 0.01), and duration was 10 (0–24) h (p &amp;lt; 0.01). Median patient-reported percent resolution of ON headaches was 80% (70–85%). All patients reported improvement of comorbid headache disorders, most commonly migraine, and a reduction, discontinuation, or increased effectiveness of medications, NB and BTX.ConclusionAll patients who underwent treatment for refractory ON by a headache specialist and plastic surgeon benefited from nerve decompression surgery in various degrees. The collaborative selection criteria employed in this study may be replicable in clinical practice.