Tattoo Reactions Research Articles

CPC06 The proof is in the ink: granulomatous tattoo reaction secondary to BRAF and MEK inhibition

CPC06 The proof is in the ink: granulomatous tattoo reaction secondary to BRAF and MEK inhibition

Punch biopsies in tattooed skin: Complications and patient‐reported outcomes

AbstractBackgroundDespite the popularity and usage of tattoos in modern society, various complications can occur such as allergic tattoo reactions, infections, tattoo removal complications and chronic granulomatous inflammatory tattoo reactions such as sarcoidosis. Histopathology of skin biopsies in tattoos is crucial in the diagnostic process of complications. As tattoos are frequently obtained for cosmetic reasons, cosmetic consequences of a skin biopsy in a tattoo are important. Remarkably, no studies have been performed regarding the consequences and expected outcome of taking a punch biopsy of tattooed skin.ObjectivesThe objective of this study is to report on the possible complications and patient‐reported cosmetic outcomes after punch biopsies in tattooed skin. Specifically, this study aims to assess the impact on appearance, symptoms and psychosocial burden of biopsies in tattooed skin, using the SCAR‐Q.MethodsPatients who underwent a punch biopsy of tattooed skin at the Tattoo Clinic in the Alrijne Hospital between 2021 and 2023 were included. To evaluate patient satisfaction of the biopsy scar the SCAR‐Q and a questionnaire regarding the recovery of the punch biopsy was used.ResultsThe final cohort consisted of 50 patients. Across all scales, the median scores on the SCAR‐Q questionnaire were consistent with the maximum score. Patients scored significantly better on the appearance scale when the biopsy was taken longer than 8 months ago. Two‐third of the patients reported no postbiopsy symptoms, with the remainder experiencing itch, pain or redness, which typically resolved within 10 days (88%). Remarkably, 42% of the patients reported the biopsy scar was not visible on the skin anymore. Scars on the lower extremities and trunk were significantly more frequently visible, as well as scars among patients aged 40 and above.ConclusionsThis study demonstrates that the cosmetic and psychological impact of punch biopsies in tattooed skin is minimal and the recovery is fast with minimal symptoms. For this reason, biopsies of tattooed skin should not be avoided in the diagnostic process.

Investigation of Adverse Reactions in Tattooed Skin through Histological and Chemical Analysis

Background: Just as the number of tattooed people has increased in recent years, so has the number of adverse reactions in tattooed skin. Tattoo colourants contain numerous, partly unidentified substances, which have the potential to provoke adverse skin reactions like allergies or granulomatous reactions. Identification of the triggering substances is often difficult or even impossible. Methods: Ten patients with typical adverse reactions in tattooed skin were enrolled in the study. Skin punch biopsies were taken and the paraffin-embedded specimens were analysed by standard haematoxylin and eosin and anti-CD3 stainings. Tattoo colourants provided by patients and punch biopsies of patients were analysed with different chromatography and mass spectrometry methods and X-ray fluorescence. Blood samples of 2 patients were screened for angiotensin-converting enzyme (ACE) and soluble interleukin-2 receptor (sIL-2R). Results: Histology showed variable skin reactions such as eosinophilic infiltrate, granulomatous reactions, or pseudolymphoma. CD3+ T lymphocytes dominated the dermal cellular infiltrate. Most patients had adverse skin reactions in red tattoos (n = 7), followed by white tattoos (n = 2). The red tattooed skin areas predominantly contained Pigment Red (P.R.) 170, but also P.R. 266, Pigment Orange (P.O.) 13, P.O. 16, and Pigment Blue (P.B.) 15. The white colourant of 1 patient contained rutile titanium dioxide but also other metals like nickel and chromium and methyl dehydroabietate – known as the main ingredient of colophonium. None of the 2 patients showed increased levels of ACE and sIL-2R related to sarcoidosis. Seven of the study participants showed partial or complete remission after treatment with topical steroids, intralesional steroids, or topical tacrolimus. Conclusions: The combination of the methods presented might be a rational approach to identify the substances that trigger adverse reactions in tattoos. Such an approach might help make tattoo colourants safer in the future if such trigger substances could be omitted.

Granulomatous tattoo reaction treated with topical allopurinol.

Granulomatous reactions to tattoo ink have been frequently associated with exogenous pigment, although sometimes they are the manifestation of a cutaneous or an underlying systemic sarcoidosis. We report a case of a granulomatous reaction to a black tattoo pigment treated with 3% topical allopurinol for three months. We observed complete resolution without any side effects. Complementary examinations and follow-up ruled out sarcoidosis. Oral allopurinol has been proven to be effective for the management of granulomatous reactions to tattoos. Based on the significant improvement we have described in our patient, we recommend new studies to reveal all the potential benefits of the topical use of allopurinol for the treatment of granulomatous reactions to tattoo ink.

Hypersensitivity to permanent tattoos: Literature summary and comprehensive review of patch tested tattoo patients 1997-2022.

We outline constituents of tattoo and permanent make-up ink with regard to inflammatory tattoo reactions and population-based confounders. The comprehensive review of patch-tested tattoo patients between 1997 and 2022 shows that tattoo allergy cannot be reliably diagnosed via patch testing with today's knowledge. Weak penetration and slow haptenization of pigments, unavailability of pigments as test allergens and a lack of knowledge concerning relevant epitopes hamper the diagnosis of tattoo allergy. Patch testing p-phenylenediamine and disperse (textile) dyes is not able to close this gap. Sensitization to metals was associated with all types of tattoo complications, although often not clinically relevant for the tattoo reaction. Binders and industrial biocides are frequently missing on ink declarations and should be patch tested. The pigment carbon black (C.I. 77266) is no skin sensitizer. Patch tests with culprit inks were usually positive with cheap ink products for non-professional use or with professionally used inks in patients with eczematous reactions characterized by papules and infiltration. Tape stripping before patch testing and patch test readings on Day 8 or 10 may improve the diagnostic quality. The meaningfulness of the categorical EU-wide ban of Pigment Green 7 and Pigment Blue 15:3 is not substantiated by the presented data.

Technical and Clinical Complications of Cosmetic Tattooing.

Cosmetic tattooing and medical tattooing of the face share basic principles and to some degree types and spectrum of technical and clinical complications known from decorative tattooing of other parts of the body. Cosmetic tattoos recently have grown exponentially in popularity in industrialized countries all over the world. The different complications and their clinical symptoms, pathophysiology, diagnosis, treatment, and prevention are analyzed versus culprit pigments and updated. Eyeliner tattooing is associated with special complications because of the subtle anatomy and the closeness to the eye, and the risk of meibomian gland damage. The spectrum of cosmetic tattoo complications includes early-onset complications (infections particularly with herpes simplex, healing issues, aesthetic and technical mistakes with regret), and late-onset complications (color fading and color shift, "blowout" pigment escape to surrounding skin, papules, nodules, granulomas associated with sarcoidosis, allergic reactions in lip tattoos with lichenoid dermatitis, eye irritation, and fibrosis and scaring especially after microblading); miscellaneous complications include severe burn sensation in tattoos during magnetic resonance imaging later in life. Corneal tattooing and subconjunctival/episcleral tattooing performed on medical indication by ophthalmologists, and for decoration by tattooists carry special risk of intraocular complications. It is recommended for the purpose of research harmonization that terms and diagnostic classification of tattoo adverse events follow the system introduced by the Tattoo Clinic of Copenhagen and already accepted in specialized tattoo clinics in other centers.

High-Frequency (20 MHz) Focused Ultrasound: A Novel Method for Noninvasive Tattoo Removal.

Alternatives or complements to laser tattoo removal are needed. Laser removal requires 8-12 sessions and can easily take longer than a year. Some colors cannot be removed, and scars may appear. Applied to allergic reactions in red tattoos, lasers can boost the allergy. A recently developed 20 MHz high-intensity focused ultrasound (HIFU) is introduced as a complementary method to lasers, but also as a stand-alone treatment for selected groups. 20 MHz HIFU allows for application of high-power ultrasound energy to very small focal targets in the dermis, and thereby precise confinement of thermal lesions in the outer layers of human skin, precisely where tattoo inks are deposited. HIFU treatment is "color blind" and can target any type of colored pigment in the dermis. It produces a controlled thermal lesion (up to 65°C) with superficial necrosis followed by an eschar with embedded tattoo pigment. This eschar, containing the tattoo pigment, is discharged over some weeks, and finally replaced by healed skin. HIFU can efficiently remove tattoos of any color in only 1-3 sessions. It can be applied to tattoos when lasers fail to produce efficient removal. The types of side effects are the same as with lasers. The operator shall be trained and knowledgeable. 20 MHz HIFU can furthermore be used in clinical and esthetic dermatology for various other applications, and a range of applications are open in clinical dermatology.

Clinicodermoscopic and immunopathological profile of non-infectious non-eczematous inflammatory tattoo reactions: A retrospective study from a tertiary care centre of East India.

Introduction Tattoo-associated complications are on the rise due to the popularity of decorative tattoos in recent years. The exact pathogeneses of various tattoo reaction patterns are still unclear, and their dermoscopic details are sparsely reported. Aim We aimed to retrospectively study the clinical, dermoscopic and immunopathological details of patients with non-infectious, non-eczematous inflammatory tattoo reaction patterns in a tertiary care centre of East India. Method The clinical, dermoscopic and pathological details of all the patients who had non-infectious, non-eczematous inflammatory tattoo reactions were collected. In all the cases, immunohistochemistry was done for CD1a, CD3, CD4, CD8, FoxP3, CD20 and CD56. Results A total of five patients of skin phototypes IV and V and six tattoo reactions were analysed. Five lesions had reactions at the site of a black tattoo, and one at the site of red tattoo. Clinically, the patients presented with erythematous or blue-grey flat-topped to verrucous papules and plaques. Dermoscopic features were dominated by a central white to pink-white structureless area, a peripheral grey-white to bluish-white structureless area, white scales, comedo-like opening with keratotic plugging, milia-like cysts and shiny white structures. Pathologically, except for one lesion that only showed a lichenoid reaction pattern in the red tattoo, all had a combination of reaction patterns. Immunohistochemistry showed increased epidermal and dermal Langerhans cells, predominantly CD8 positive T cells in the epidermis and dermis, sparse dermal B cells and CD4 positive T cells, reduced T regulatory cells and a complete absence of CD56 positive NK cells. Limitations Small sample size was the limitation of the study. Conclusion The clinical morphology and dermoscopy may not differentiate between various types of non-infectious non-eczematous inflammatory tattoo reactions. The immunological profile supports a delayed hypersensitivity reaction due to contact sensitisation to tattoo pigment, and CD8 positive T cells play a central role in executing various pathological reaction patterns, both in the epidermis and dermis.

34219 Hypersensitivity reaction to tattoo pigment secondary to checkpoint inhibition

Immune checkpoint inhibitors are known to have a variety of dermatologic side effects, including granulomatous or sarcoidal inflammatory eruptions. Rarely, patients with permanent tattoos have had granulomatous reactions to immunotherapy. We present, herein, a case of a hypersensitivity reaction to purple tattoo in the setting of pembrolizumab. To the best of our knowledge, this is the first case of a non-granulomatous tattoo reaction secondary to a checkpoint inhibitor. The patient is a 43-year-old Caucasian woman with history of stage IIIA melanoma of the right mid back status post wide local excision and positive sentinel node biopsy, on single agent pembrolizumab.

Dermoscopy of pseudoepitheliomatous hyperplasia tattoo reaction pattern: A potential mimicker of squamous cell carcinoma

Dermoscopy of pseudoepitheliomatous hyperplasia tattoo reaction pattern: A potential mimicker of squamous cell carcinoma

Co-localized line-field confocal optical coherence tomography and confocal Raman microspectroscopy for three-dimensional high-resolution morphological and molecular characterization of skin tissues ex vivo.

Line-field confocal optical coherence tomography (LC-OCT) is an optical modality that provides three-dimensional (3D) images of the skin at cellular resolution. Confocal Raman microspectroscopy (CRM) is a label-free optical technique that can provide point measurement of the molecular content of the skin. This work presents a method to co-localize LC-OCT and CRM acquisitions for morpho-molecular analysis of ex vivo skin tissues at cellular level. The co-localization method allows acquisition of Raman spectra at specific locations in a sample identified from a 3D LC-OCT image, with an accuracy of ± 20 µm. The method was applied to the characterization of tattooed skin biopsies with adverse tattoo reactions. LC-OCT images allowed to target specific regions in the biopsies where the presence of tattoo ink was revealed by detection of the Raman signature of ink pigments. Micrometer-sized foreign bodies of various materials as well as inflammatory cells were also identified within the biopsies. From these results, we demonstrate the value of the LC-OCT-CRM co-localization method and its potential for future ex vivo analysis of suspicious skin lesions.

Clinico-histopathological study of tattoo reactions in tertiary care center

<p class="abstract"><strong>Background:</strong> Tattooing is nowadays very common practice especially among young people and we are witnessing a gradual increase of numerous potential reactions to tattoos. Purpose of this study was to identify the various tattoo reactions and to correlate it with histopathological examination and early interventions to decrease further morbidity.</p><p class="abstract"><strong>Methods:</strong> From December 2017 to September 2019, patients reporting with reactions due to tattooing were included in the present study after obtaining informed consent. A detailed history regarding the onset, duration and colour used for tattooing were collected and noted. Cutaneous examination and biopsy were done in all cases to know the type of reaction.<strong></strong></p><p class="abstract"><strong>Results:</strong> The analysis included 50 patients who had tattoo reactions. The most common age group affected was 16-30 years, with slight male predominance. Most of the cases (64%) with tattoo reaction presented to us within 1 to 4 months of disease presentation. Clinically, most cases had granulomatous reaction 23 (46%). On histopathology, granulomatous reaction was the most common type observed. Red colour dye was the most common colour associated with reaction seen. Clinico-histopathological correlation of various types of tattoo reaction revealed consistency with diagnosis in 17 (34%) patients, clinically as well as on histopathological examination.</p><p class="abstract"><strong>Conclusions:</strong> Lack of strict regulations by government and increased fashion trends increase complications associated with tattoos. Red inks are the most frequently associated with tattoo reactions. Granulomatous type reactions are a frequently reported pattern of inflammation seen in tattoo.</p>

Tattoo Pigment Identification in Inks and Skin Biopsies of Adverse Reactions by Complementary Elemental and Molecular Bioimaging with Mass Spectral Library Matching.

Tattooing has become increasingly popular throughout society. Despite the recognized issue of adverse reactions in tattoos, regulations remain challenging with limited data available and a missing positive list. The diverse chemical properties of mostly insoluble inorganic and organic pigments pose an outstanding analytical challenge, which typically requires extensive sample preparation. Here, we present a multimodal bioimaging approach combining micro X-ray fluorescence (μXRF) and laser desorption ionization-mass spectrometry (LDI-MS) to detect the elemental and molecular composition in the same sample. The pigment structures directly absorb the laser energy, eliminating the need for matrix application. A computational data processing workflow clusters spatially resolved LDI-MS scans to merge redundant information into consensus spectra, which are then matched against new open mass spectral libraries of tattoo pigments. When applied to 13 tattoo inks and 68 skin samples from skin biopsies in adverse tattoo reactions, characteristic signal patterns of isotopes, ion adducts, and in-source fragments in LDI-MS1 scans yielded confident compound annotations across various pigment classes. Combined with μXRF, pigment annotations were achieved for all skin samples with 14 unique structures and 2 inorganic pigments, emphasizing the applicability to larger studies. The tattoo-specific spectral libraries and further information are available on the tattoo-analysis.github.io website.

Clinical and Pathological Features of Persistent Decorative Tattoo Reactions.

Persistent, non-infectious medical complications arising from decorative tattoos have increased considerably. They are difficult to characterize clinically, and histopathology shows a wide variety of overlapping patterns, with lichenoid and granulomatous dermatitis being the most common findings. Both clinical and pathological findings are difficult to ascribe to particular ink colour. The findings in 30 biopsies from 28 patients with persistent reactions in decorative tattoos are reported, including immunohistochemical findings.

Operative Treatment of Severe Allergic Reactions to Red Tattoo Dye: Presentation and Comparison of Possible Surgical Procedures in Seven Patients.

Context:The treatment of allergic reactions to red tattoo dye is challenging in most cases, as local therapy often does not offer long-term improvement and laser therapy is considered relatively contraindicated by many authors owing to the risk of generalized side effects. Therefore, surgical removal of these tattoos is favored; shave excision is the method of choice, particularly for the removal of the entire dye.Aims:The aim of this article was to retrospectively analyze the best post-operative outcome after surgical removal of allergic tattoo reactions using different excision techniques.Materials and Methods:We compared the different surgical procedures performed on seven patients with single and multiple allergic tattoo reactions treated between 2013 and 2018.Results:The best aesthetic results were achieved by superficial ablation of the inflammatory reaction, partially leaving tattoo remains in the skin.Conclusion:Based on our experience with this small number of patients, a superficial removal of the tattoo without complete removal of the dye is, in most cases, sufficient to achieve healing. The remaining dye residues seem to be better tolerated by the immune system afterwards. Furthermore, the tattoo is often preserved in large parts.

Tattoos Dermatological Complications: Analysis of 53 Cases from Northern Poland

Background: The frequency of tattoos varies from 10% to 30% across the population worldwide. The growing popularity of tattooing increases the number of cutaneous reactions connected with this procedure. As we have not found any previous studies in the literature concerning tattoo complications in Poland and other Eastern European countries, we believe this to be the first study of this kind. Objective: The primary objective of this study was to evaluate the clinical spectrum of complications associated with the procedure of permanent tattooing among patients from Northern Poland. Methods: Medical data of 53 patients who developed tattoo-related cutaneous conditions were analyzed. All of the patients were consulted in the Dermatology, Venereology and Allergology Clinic in Gdańsk in the years 2018–2021. Medical history, dermatological assessment, and photographic documentation of skin lesions were performed in each case. Dermoscopic examination was carried out in 16 cases and 20 skin biopsies of the tattoo reactions were performed. Results: Twenty-one patients (40%) presented tattoo ink hypersensitivity reactions, out of which 18 were triggered by the red ink. In 11 cases (21%), contact dermatitis has developed after tattooing, while 9 of the patients (17%) presented tattoo infectious complications, including local bacterial infections, common warts, molluscum contagiosum, and demodicosis. We collected 8 cases (15%) of papulonodular reactions in black tattoos, and in 6 of them, histology showed granuloma formation. In 2 cases (4%), symptoms of anaphylaxis were observed after the tattooing procedure, and in another 2 cases (4%), Koebner phenomenon in the tattoo was diagnosed. Dermoscopy was the clue to the diagnosis in 4 cases. Conclusions: This is the first report presenting multiple cases of tattoo complications from Eastern Europe. The results of the study are consistent with other researches, showing a similar distribution of tattoo complications and that across the different pigments used, the red ink is most frequently responsible for tattoo reactions. We emphasize the usefulness of dermoscopic examination in the diagnosis of tattoo-related infections and draw the reader’s attention to the rare, yet hazardous complications connected with peri-tattooing anaphylaxis.

Complications of tattoos and permanent makeup: overview and analysis of 308 cases

Worldwide 10-20% of the population is tattooed. However, tattoo complications can occur, such as allergic tattoo reactions, infections, and manifestations of autoimmune dermatoses. Despite the growing popularity of tattoos and changes in tattoo ink composition over the last decades, little is known about these complications, its clinical aspects, pathomechanism, and relative occurrence. The aim of this article is to describe the types and clinical aspects of dermatological tattoo complications, its relative occurrence and underlying conditions. We performed a retrospective cohort study enrolling all patients with tattoo complications from the Tattoo Clinic. Tattoo complications were categorized into infections, inflammatory tattoo reactions, neoplasms, or miscellaneous reactions and correlated to clinical data. Of the total of 326 patients, 301 patients were included with 308 complications. The majority of the complications were chronic: 91.9%. Allergic red tattoo reactions and chronic inflammatory black tattoo reactions (CIBTR) accounted for 50.2% and 18.2%, respectively, of all tattoo complications. Of these CIBTR reactions, extracutaneous involvement was found in 21.4%, including tattoo-associated uveitis (7.1%) and systemic sarcoidosis (14.2%). Of all black tattoo reactions, systemic sarcoidosis was found in 7.8%. Tattoos can cause a wide range in complications that may start years after getting the tattoo. The most frequent tattoo reactions are allergic red tattoo reactions and chronic inflammatory black tattoo reactions, making these the most relevant for the dermatologist. CIBTR have a high percentage of multi-organ involvement, and therefore, screening for sarcoidosis, including ocular involvement, is advised.

RARE EXPRESSION OF SYSTEMIC SARCOIDOSIS AFTER A NOVEL RNA VACCINE

TOPIC: Diffuse Lung Disease TYPE: Medical Student/Resident Case Reports INTRODUCTION: Sarcoidosis is a multisystem disorder of unknown etiology. Some cases are attributed to genetic factors, an inflammatory response by specific antigens including self-antigen, and autoimmune involvement. Ninety percent of patients with sarcoidosis have lung involvement, and a vast portion is asymptomatic. Most common initial symptoms are dry cough and dyspnea, however, manifestation can be unspecific and broad. Ocular manifestations like uveitis are a classical presentation. Cutaneous manifestations have also been associated with sarcoidosis but incidence is around 1.9 per 100,000 with a female predominance. Diagnosis can be performed from clinical, and radiological findings yet one of the most essential criteria is histopathological findings of non-caseating granulomas on a tissue biopsy. Here is a rare presentation of a Hispanic male with sarcoidosis after exposure to an unusual antigen. CASE PRESENTATION: A 32-year-old man came to the emergency department with dyspnea, dry cough, and bilateral eye redness of one week of evolution and ten days after the second dose of the SARS-CoV-2 vaccine. Before these symptoms, the patient experienced multiple desquamating tattoos and bilateral eye redness after the first dose of the vaccine, which presumed that resolved with tobramycin and dexamethasone eye drops. Physical examination was notable for tattoo peeling with surrounding erythematous papules and tenderness to palpation. Eye examination revealed an intact visual acuity bilaterally with hyperemia and conjunctival injection. Ophthalmology made the diagnosis of non-granulomatous bilateral anterior uveitis. Routine laboratories were unremarkable including angiotensin-converting enzyme levels except for erythrocyte sedimentation rate on 32mm/Hr and arterial blood gas with a partial pressure of oxygen of 72 mmHg. Chest radiograph revealed innumerable bilateral centrilobular nodules. Chest Computerized tomography showed bilateral centrilobular diffuse pulmonary nodules with associated mediastinal paratracheal and mediastinal lymphadenopathy. Skin biopsy revealed a nodular infiltrate of histiocytes with black foreign body deposits with non-caseating sarcoid granulomas. Treatment consisted of prednisone and azathioprine resulting in an improvement of symptoms the following days. DISCUSSION: The side effects of this novel ribonucleic acid vaccine are not well described yet, but our case raises the suspicion if the vaccine arouses or unmask autoimmune diseases like the one previously described. CONCLUSIONS: More studies and data are required on side effects to assess other possible complications, response to the vaccine, and which patients are at risk of developing autoimmune or serious health conditions. REFERENCE #1: Grunewald, J., Grutters, J. C., Arkema, E. V., Saketkoo, L. A., Moller, D. R., & Muller-Quernheim, J. (2019). Sarcoidosis. Nature Reviews Disease Primers, 5(1).doi:10.1038/s41572-019-0096-x REFERENCE #2: Greco FG, Spagnolo P, Muri M, et al. The value of chest radiograph and computed tomography in pulmonary sarcoidosis. Sarcoidosis, Vasculitis, and Diffuse Lung Diseases: Official Journal of WASOG. 2014 Jul;31(2):108-116. REFERENCE #3: Saygin, D., Karunamurthy, A., English, J., & Aggarwal, R. (2018). Tattoo reaction as a presenting manifestation of systemic sarcoidosis. Rheumatology. doi:10.1093/rheumatology/key316 DISCLOSURES: No relevant relationships by Jose Colon-Marquez, source=Admin input No relevant relationships by Ian Da Silva Lugo, source=Web Response No relevant relationships by Juan Feliciano-FIgueroa, source=Web Response No relevant relationships by Gabriela Negron-Ocasio, source=Web Response No relevant relationships by Stephanie Ortiz-Troche, source=Web Response No relevant relationships by Kimberly Padilla Rodriguez, source=Admin input No relevant relationships by Jerome Ramirez-Marquez, source=Web Response No relevant relationships by Juan Santiago, source=Web Response No relevant relationships by Luis Velazquez, source=Web Response

Phototoxic versus photoprotective effects of tattoo pigments in reconstructed human skin models: In vitro phototoxicity testing of tattoo pigments: 3D versus 2D

The increasing number of tattooed persons urges the development of reliable test systems to assess tattoo associated risks. The alarming prevalence of 60 % phototoxic reactions in tattoos ask for a more comprehensive investigation of phototoxic reactions in tattooed skin.Here, we aimed to compare the cellular responses of human skin cells to ultraviolet (UV)A and UVB irradiation in doses of short to intermitted sun exposure (3–48 J/cm² and 0.05–5 J/cm², respectively) in the presence of tattoo pigments. Therefore, we used fibroblast monolayer culture (2D), our recently developed three dimensional full-thickness skin model with dermal-located tattoo pigments (TatSFT) and its dermal equivalents (TatSDE) that lack keratinocytes. We tested the most frequently used tattoo pigments carbon black, titanium dioxide (TiO2) anatase and rutile as well as Pigment Orange (P.O.)13 in ranges from 0.067 to 2.7 ng/cell in 2D. For TatSDE and TatSFT, concentrations were 1.3 ng/cell for TiO2, 0.67 ng/cell for P.O.13 and 0.067 ng/cell for carbon black. We assessed cell viability and cytokine release in all systems, and cyclobutane pyrimidine dimer (CPD) formation in TatSFT.Phototoxicity of tattoo pigments was exclusively observed in 2D, where especially TiO2 anatase induced phototoxic effects in all concentrations (0.067–2.7 ng/cell). In contrast, fibroblasts were protected from UV irradiation in TatSDE by TiO2 and carbon black. Neither toxic nor protective effects were recorded in TatSFT. P.O.13 showed altered cytokine secretion in 2D (0.067–1.3 ng/cell) and TatSDE, despite the absence of significant effects on viability in all systems. All pigments reduced the number of CPDs in TatSFT compared to the pigment-free controls.In conclusion, our study shows that within a 3D arrangement, intradermal tattoo pigments may act photoprotective despite intrinsic phototoxic properties in 2D. Thus, dermal 3D equivalents should be considered to evaluate acute tattoo pigment toxicology.

Histopathological evaluation of cutaneous reactions to tattoos: Study at a tertiary care center.

Tattooing has been around for many years and is becoming an increasingly common fashion trend. As there are often few regulatory laws regarding the practice, an increase in the incidence of cutaneous reactions to tattoo inks is noted. These include allergic reactions, granulomatous dermatitis, infections, lichenoid dermatoses, and sometimes malignancy. The present study examines the histopathological changes seen in patients with cutaneous reactions to tattoo ink. A prospective observational study was conducted over 18months in the dermatology clinic of a tertiary care center in western India. The study population included 22 patients with cutaneous reactions over the tattoos. Punch biopsy specimens were sent to study the pattern of histopathological response. All 22 patients studied were between the ages of 17 and 35 years. The mean duration of development of reaction was 8.1 months. Most of the reactions were seen in black ink tattoos performed by amateurs. Perivascular and spongiotic dermatitis suggestive of allergic response was the most common feature on histopathology. Granulomatous response and lichenoid response were seen in five and three biopsies, respectively. Legalization is needed for this practice to prevent tattoo reactions. Histopathological evaluation is important as tattoo reactions may be associated with skin infections and malignancies.