Mycological Characteristics Research Articles

Adult tinea capitis in China: A retrospective analysis from 2000 to 2019.

Tinea capitis (TC) is an infection of the scalp hair due to dermatophytes. Most commonly seen in prepubescent children, but data of adults tinea capitis (ATC) in China mainland are limited. We aimed to evaluate epidemiological, clinical and mycological characteristics of ATC in China from 2000 to 2019. We retrospectively analysed all ATC reported cases in China mainland, confirmed by mycological examination, by searching PubMed, Wanfang, Weipu and CNKI database. In sum, 40 papers involving 269 clinical cases were included. The average morbidity of ATC was calculated as 9.04% after standardisation. The sexratio is 1:5.2 (31 male, 163 female); 76 people between 18 and 44 age level and 137 people between 45 and 89 age level were diagnosed as ATC. Culture or ITS sequencing identified Trichophyton violaceum in 70 cases (35.2%), Microsporum canis in 42 cases (21.1%), Trichophyton mentagrophyte in 32 cases (16.1%), Trichophyton rubrum in 23 cases (11.5%), Microsporum gypseum in 18 cases (9.0%), Trichophyton tonsurans in 6 cases (3.0%), Trichophyton schoenleini in 4 cases (2.0%), Epidermophyton floccosum in 2 cases (1.0%), Trichophyton verrucosum and Microsporum ferrugineum in one case (0.5%). ATC was easily to be diagnosed as furfur, seborrhoeic dermatitis (13%) or pustular and dermatocellulitis (11.15%).Six immunocompromised persons were recorded (2.2%). ATC mainly involves postmenopausal women. Trichophyton violaceum, M canis, T mentagrophyte remain the most common aetiological agent of ATC in China. Trichophyton rubrum own the much higher frequency in ATC than in children. For diversified clinical manifestations, recognising ATC profiles will help clinicians avoid misdiagnosis.

Trichophyton indotineae sp. nov.: A New Highly Terbinafine-Resistant Anthropophilic Dermatophyte Species.

In this report, we describe the first isolation of two highly terbinafine (TRF)-resistant Trichophyton interdigitale-like strains from a Nepali patient and an Indian patient with tinea corporis in Japan. These strains (designated NUBS19006 and NUBS19007) exhibited a TRF minimal inhibitory concentration (MIC) of > 32mg/L and contained a missense mutation (Phe397Leu) in squalene epoxidase (SQLE) gene. The internal transcribed spacer (ITS) region sequences amplified from the isolates (NUBS19006 and NUBS19007) were 99.5% identical to Japanese isolates of T. interdigitale and T. interdigitale strain CBS 428.63. The homology of region sequences were also 97.6% identical to T. mentagrophytes strain CBS 318.56. Moreover, the ITS sequences amplified from the isolates were 100% identical to highly TRF-resistant strains of T. interdigitale, which were isolated in Delhi, India, and harbored mutations in SQLE. The urease test on Christensen's urease agar was positive for T. mentagrophytes and T. interdigitale after 7days of incubation. On the other hand, the type strain of T. rubrum CBS 100081T and highly TRF-resistant strains (NUBS19006 and NUBS19007) were negative on Christensen urease agar after 7 and 14days of incubation. Moreover, NUBS19006 and NUBS19007 were also negative reaction on the hair perforation test. To avoid confusion in the taxonomy of the T. mentagrophytes/T. interdigitale complex, we suggest that the highly TRF-resistant Indian strains be considered a new species independent of T. interdigitale, according to clinical and mycological features.

Clinical profile of Tinea pseudoimbricata: an observational study from a tertiary care institution in western Maharashtra, India

<p class="abstract"><strong>Background:</strong> Topical steroid-modified tinea corporis and tinea cruris is on the rise due to the ease of availability of over-the-counter potent topical corticosteroid preparations and their inappropriate use, alters the true morphology of lesion. As there is paucity of literature about increasing prevalence and varied presentation of this condition, we aimed to study the clinical profile and dermoscopic features of <em>Tinea pseudoimbricata</em> due to topical steroid abuse. We present a case-series of 77 cases of a distinct morphological pattern with central erythematous, scaly, pruritic concentrically spreading plaques with raised and scaly borders known as <em>Tinea pseudoimbricata</em>.</p><p class="abstract"><strong>Methods:</strong> We evaluated 77 clinically diagnosed patients of <em>Tinea pseudoimbricata</em> with positive 10% potassium hydroxide examination and culture. Dermoscopy was performed in all patients. The demographic, clinical, and mycological features of each patient were recorded on a predesigned proforma.<strong></strong></p><p class="abstract"><strong>Results:</strong> There were 52 male and 25 female patients with a mean age of 28.66 and a mean disease duration of 7.6 months. There was a history of application of potent or super-potent topical steroid for varying durations. Culture isolates were <em>Trichophyton rubrum</em> species. Dermoscopic analysis showed features of steroid abuse.</p><p class="abstract"><strong>Conclusions:</strong> Injudicious and inappropriate use of topical steroid causes <em>Tinea pseudoimbricata</em>; a special subset of tinea incognito, which is very common now a days. This should alert the dermatologist about the steroid abuse and requires systemic anti-fungal treatment for prolong time.</p>

Non-dermatophyte Mould Onychomycosis in Japan.

The incidence of non-dermatophyte mould onychomycosis has been increasing worldwide for the past several decades, but it is not well recognized in Japan. Recent molecular techniques and phylogenetic analyses contributed to the identification of uncommon and emerging species. We came across 13 (0.5%) cases of non-dermatophyte onychomycosis among a total of 2,591 onychomycosis cases in 106,703 outpatients during the past 5 years (January 2015-December 2019). The cases included 5 patients with Aspergillus species, 4 patients with Fusarium species, and one patient each with Scopulariopsis brevicaulis and Botryosphaeria dothidea, respectively. Botryosphaeria dothidea is closely related phylogenetically to Neoscytalidium dimidiatum. In Japan, at the time of writing this report, there are 26 reported cases of ungual aspergillosis and 18 cases of hyalohyphomycosis caused by Fusarium species. We summarize these cases and report the symptoms and mycological features.

Analysis of Adult Patients with Tinea Capitis in Southeastern Korea.

BackgroundTinea capitis is a cutaneous infection of dermatophytes and predominant in children. Although tinea capitis in Korea is controlled by oral antifungal medications and concerted public health initiatives, it's still a health issue.ObjectiveTo investigate changes in the epidemiological and mycological characteristics of adult patients with tinea capitis in southeastern Korea.MethodsUsing medical records from Kyungpook National University Hospital and Catholic Skin Clinic from 1989 to 2018, we retrospectively investigated the epidemiological and mycological characteristics of 266 adult patients (aged over 20) with tinea capitis.Results Among total 266 patients, 239 were KOH-positive. The annual incidence of tinea capitis ranged from 3 to 18 between 1989 and 2018. Of the total, 54 (20.30%) were male and 212 (79.70%) were female. Eighty patients (30.08%) were in their seventies, the most commonly affected age group. Of the remaining, 58 (21.80%) were in their sixties, and 41 (15.41%) in eighties. Among all, 77 (28.95%) visited the hospital in summer, 72 (27.07%) in spring, 64 (24.06%) in winter, and 53 (19.92%) in fall. Dermatophytes were cultured from 171 patients. Microsporum canis was the most common dermatophyte (42.48%), while Trichophyton rubrum was the second (15.79%). Of the 266 patients, 186 (69.92%) lived in urban areas and 80 (30.08%) in rural areas.ConclusionThe epidemiological and mycological characteristics of adult patients with tinea capitis were different from those of children in terms of annual incidence, sex distribution, and isolated dermatophytes. These results provide useful information for the treatment and prevention of tinea capitis.

Mycological Features of Trichophyton verrucosum Isolated in Cattle

Mycological Features of <i>Trichophyton verrucosum</i> Isolated in Cattle

Clinico-mycological study of onychomycosis in a tertiary care hospital-A cross-sectional study.

Onychomycosis (OM), has a worldwide prevalence of 5% and 0.5%-5% in India. Trichophyton. rubrum (T rubrum) and T mentagrophytes are the most commonly isolated fungi. As the clinical and mycological characteristics change with time and geographical region; it is important to study the temporal and topographic patterns periodically. The study was conducted to identify the epidemiological and clinico-mycological characteristics of patients with OM attending a tertiary care hospital in Delhi. Hundred patients with clinical diagnosis of OM were recruited. Among these, 88 patients who tested positive for OM on direct microscopy with KOH, culture and/or histopathology with periodic acid-Schiff were included in the study. The clinico-mycological characteristics and risk factors associated with OM were evaluated. OM was more common in males (M:F=2.5:1). The mean age of patients with OM was 39±15.3years (SE 1.52) with mean disease duration of 27.6±46.1months (SE 4.9). Seventeen (19.3%) patients had concomitant diabetes mellitus. The patients displayed mean body mass index (BMI) of 25.67±1.35kg/sq m. Concurrent dermatophytosis of skin was present in 35 (39.77%) patients. Two feet-one hand syndrome was present in 5 patients. Fingernail involvement without toenail involvement was more common than toenail involvement alone. (43.18% vs 38.63%). Distal and lateral subungual OM (DLSO) was the commonest clinical variant (81.8%). Mycological culture showed growth in 47 (53.40%) patients. Dermatophytes were isolated in majority, that is in 30 (63.82%) patients followed by non-dermatophytic moulds (NDM) in 7 (14.8%) and Candida spp. in the remaining 10 (21.27%) patients.

Pityriasis Versicolor in Children and Adolescents: an Update

Purpose of Review Pityriasis versicolor (PV) is a superficial mycosis that it can occur at any age, even in newborns. In this review, we will describe epidemiological data, mycological characteristics of yeast, pathogenesis and clinical characteristics of the disease, different diagnostic resources, and the current recommendations for treatment.

Retrospective two-centre study on prepubertal children with Tinea capitis in Korea.

Tinea capitis is an infectious dermatological disorder caused by dermatophytes that occur primarily in children. It has recently been brought under effective control in Korea since the introduction of oral antifungal medications and the implementation of concerted public health initiatives. Therefore, its incidence rate has decreased considerably. We investigated changes in the epidemiological and mycological characteristics of tinea capitis patients under the age of 10 in Korea. Using medical records from Kyungpook National University Hospital and the Catholic Skin Disease Clinic from 1989 to 2018, we retrospectively investigated the characteristics of 786 patients with tinea capitis. Of the 786 patients, 744 were KOH-positive. The annual incidence of tinea capitis was decreased from 120 to less than 10 between 1989 and 2018. Overall, 446 (56.74%) were male and 340 (43.26%) were female, representing a ratio of 1:0.8. In terms of the seasonality of it, 276 (35.11%) visited hospital in winter, 193 (24.55%) in spring, 177 (22.52%) in fall and 140 (17.81%) in summer. Dermatophytes were cultured from 628 patients. Microsporum canis was the most common dermatophyte (73.16%), followed by Trichophyton verrucosum and Trichophyton rubum. Of the 786 patients, 577 (73.41%) lived in urban areas and 209 (26.59%) in rural areas. Changes in the epidemiological and mycological characteristics of children with tinea capitis were shown in incidence, sex distribution, seasonality and causative dermatophytes. The incidence of tinea capitis has fallen significantly in prepubertal children. Nevertheless, continuous surveillance is needed to prevent tinea capitis in Korea.

Clinico-etiological analysis of annular skin eruptions: a cross-sectional study from Western Maharashtra

&lt;p class="abstract"&gt;&lt;strong&gt;Background:&lt;/strong&gt; Annular skin eruptions commonly present in dermatology outpatient department. The most common cause of annular lesions encountered among the adult population in developing nations is dermatophytosis. The aim of the study was to identify risk factors and determine etiology of annular skin lesions after correlation of clinical, pathological, serological and mycological features and to analyze the clinical and laboratory features.&lt;/p&gt;&lt;p class="abstract"&gt;&lt;strong&gt;Methods:&lt;/strong&gt; A cross-sectional study was conducted on 103 patients presenting with annular skin eruptions to the Dermatology outpatient/inpatient department of BJ Government Medical College and Sassoon Hospital, Pune during a two year period (2015 to 2017).&lt;strong&gt;&lt;/strong&gt;&lt;/p&gt;&lt;p class="abstract"&gt;&lt;strong&gt;Results:&lt;/strong&gt; During a two year period from 2015 to 2017, 103 patients with annular skin eruptions were enrolled. Of these, 67% (65.05%) had superficial dermatophytosis while 16 (15.5%) had Hansens disease. Other groups of sporadic cases found were chronic plaque psoriasis (54.85%), pityriasis rosea (43.9%), pityriasis versicolor (21.9%), secondary syphilis (21.9%), granuloma annulare (21.9%), annular elastolytic giant cell granuloma (11%), Bowens disease (11%), erythema multiforme (11%), porokeratosis (11%) and sarcoidosis (11%). Statistically significant association was found between number, color, site and symptoms in superficial dermatophytosis.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusions:&lt;/strong&gt; This was a novel study that attempted a comprehensive clinico-etiological compilation of annular skin eruptions analyzing a large number of clinical variables and risk factors. Based on the observations, an algorithmic clinical approach has been suggested to facilitate early diagnosis and treatment initiation.&lt;/p&gt;

Pyraclostrobin에 대하여 저항성인 고추탄저병균의 균학적 특징 및 포장 적응력

Pyraclostrobin에 대하여 저항성인 고추탄저병균의 균학적 특징 및 포장 적응력

Epidemiological and Mycological Characteristics of Teenagers with Tinea Capitis in Southeastern Korea: Trichophyton tonsurans as the Main Causative Fungus in Recent 10 Years

Background: Tinea capitis is a contagious fungal infection that occurs predominantly in childhood. Although its incidence has declined, its epidemiological and mycological characteristics are continue to evolve. Objective: To assess changes in the epidemiological and mycological characteristics of tinea capitis in teenage patients in Southeastern Korea. Methods: We retrospectively investigated epidemiological and mycological characteristics of 202 teenage patientswith tinea capitis who visited Kyungpook National University Hospital and the Catholic Skin Disease Clinic from 1989-2018. Results: Of 202 patients, 177 patients showed KOH-positivity. Dermatophytes were cultured from 157 patients. The annual incidence of tinea capitis ranged from 0 to 30 between 1989 and 2018. Of 202 patients, 153 patients (75.74%) were male and 49 patients (24.26%) were female. The ratio of male to female was 1:0.32. For seasonal distribution, 78 patients (38.61%) visited our hospital in winter, 59 patients (29.21%) visited in spring, 35 patients (17.33%) visited in fall, and 30 patients (14.85%) visited in summer. Microsporum canis was the most common dermatophyte (44.06%) isolated from tinea capitis. Trichophyton tonsurans was the second most common dermatophyte (26.73%). For inhabitancy distribution, 151 patients (74.75%) lived in urban areas and 51 (25.25%) lived in rural areas. Conclusion: The epidemiological characteristics of teenage patients with tinea capitis were distinct from those of adults in annual incidence, sexual distribution and isolated dermatophytes. Trichophyton tonsurans was the main causative organism of tinea capitis in recent 10 years. These results are useful for the targeted treatment and prevention of tinea capitis.

Adult tinea capitis and tinea barbae in a tertiary Portuguese hospital: A 11‐year audit

Adult tinea capitis and tinea barbae are nowadays considered uncommon in developed countries. Despite their potential for morbidity and healthcare costs, few series have attempted to characterise these infectious disorders. We conducted a cross-sectional study to analyse the epidemiological, clinical and mycological characteristics of adult tinea capitis and tinea barbae of a large tertiary centre in Southern Europe. All adult patients with a mycological-confirmed tinea capitis or barbae over a 11-year period (January 2008 to December 2018) were considered for the analysis. Concerning tinea capitis, 860 culture-confirmed diagnoses were made during this 11-year period, of which only 15 (1.5%) occurred in adults (15 patients). A disproportionately high number of patients were female and immunocompromised. Microsporum audouinii (20%) and Trichophyton rubrum (20%) were the most common isolates. Half of the cases were initially misdiagnosed. Regarding tinea barbae, 7 cases were diagnosed over this time period. Overuse of topical steroids was widespread in this population. Trichophyton rubrum was the infectious agent in all cases. Initial misdiagnosis was very common (43%). Adult tinea capitis and tinea barbae can still be observed in contemporary practice and remain a public health concern, with the immunosuppressed patient being particularly affected. Initial misdiagnosis is a common occurrence. Anthropophilic fungi are now the most common aetiologic agents of these infections, and they will probably continue to do so as the large urban centres expand peripherally. Awareness for this diagnosis is necessary to prevent unwarranted morbidity and costs.

ПРЕОДОЛЕНИЕ СОРТОВОЙ УСТОЙЧИВОСТИ КЛУБНЕЙ КАРТОФЕЛЯ К ВОЗБУДИТЕЛЯМ ОСНОВНЫХ БОЛЕЗНЕЙ КАРТОФЕЛЯ В ЗАВИСИМОСТИ ОТ ИЗМЕНЕНИЙ МИКОЛОГИЧЕСКИХ ПАРАМЕТРОВ ПАТОГЕНОВ

ПРЕОДОЛЕНИЕ СОРТОВОЙ УСТОЙЧИВОСТИ КЛУБНЕЙ КАРТОФЕЛЯ К ВОЗБУДИТЕЛЯМ ОСНОВНЫХ БОЛЕЗНЕЙ КАРТОФЕЛЯ В ЗАВИСИМОСТИ ОТ ИЗМЕНЕНИЙ МИКОЛОГИЧЕСКИХ ПАРАМЕТРОВ ПАТОГЕНОВ

Diagnosis and Management of Fungal Neglected Tropical Diseases In Community Settings-Mycetoma and Sporotrichosis.

Background: This is a retrospective, analytic observational study where we describe cases of sporotrichosis and mycetoma from Acapulco General Hospital and Community Dermatology Mexico C.A. over 25 years. Analysis of environmental features that favour the development of such diseases has been made, as well as the limitations in the study and treatment of such diseases in resource poor settings. Methods: We reviewed the information on 76 sporotrichosis and 113 mycetoma patients out of a total of 14,000 consultations at Acapulco General Hospital and from Community Dermatology clinics. We analysed the epidemiological and mycological characteristics and the investigations used for diagnosis such as direct examination, culture, intradermal test reactions, and biopsy. Results: In total 91 confirmed cases of actinomycetoma, 22 of eumycetoma and 76 of sporotrichosis have been identified including diagnostic studies for both diseases and their treatment. Discussion: The results obtained have been analysed and interpreted in patients with mycetoma and sporotrichosis in the state of Guerrero, México, along with limitations in their management in areas with limited economic and logistical resources. The prevalence of mycetoma in our setting is compared with other centres where patients from all over the country are seen. The possible causes for variations in prevalence in specific areas has been looked for, in one of the poorest states of the Mexican Republic.

Tinea capitis in adults: A 18-year retrospective, single-centre study in Korea.

Tinea capitis (TC) is a dermatophyte infection involving hair and scalp and occurs primarily in prepubertal children. However, data on adults are limited. The aim of this study was to evaluate epidemiological, clinical and mycological characteristics of TC in adults in Korea. We retrospectively evaluated 82 adults (44.3%) among 185 TC patients at a tertiary hospital during June 2000-2017. Mean patient age was 66.9±15.8 (20-90) years with female predominance; mean disease duration until mycological diagnosis, 22.5 (1-144) weeks; and misdiagnosis rate, 65.9%. Most common presumptive initial diagnoses were seborrhoeic dermatitis (24.4%) and bacterial folliculitis (18.3%). Chronic systemic illness and accompanying alopecia were found in 61 (74.4%) and 46 (56.1%) patients, respectively. Pustular type was found in 26.8% patients, followed by seborrhoeic dermatitis-like 25.6%, grey patch 23.2%, kerion celsi 22.0% and black dot 2.4%. Forty-eight patients (58.5%) had tinea infection at other skin areas. Microsporum canis (56.5%) and Trichophyton rubrum (21.7%) were the most common causative organisms; 92.7% patients achieved complete resolution, and seven patients (9.2%) had a recurrence. We report the largest, most recent series of case studies of adult TC. Adult TC is not an uncommon problem, especially in elderly women, and has distinctive epidemiological and clinicomycological characteristics compared to those in prepubertal children. Recognising adult TC profile will help clinicians avoid misdiagnosis and provide appropriate treatment.

Favus of Scrotum Due to Trichophyton rubrum in Immunocompetent Patients: A Clinical, Mycological and Ultrastructural Study.

To characterize the clinical and mycological features of favus of scrotum due to Trichophyton rubrum. A single-site prospective study was carried out in an outpatient dermatology clinic. Microscopic examination and fungal culture were done using skin scrapings. Scales on the scrotum were stained with PAS and visualized by microscopy, including in vivo reflectance confocal microscopy (RCM). Two strains were analyzed by RAPD typing. Scutular lesions were fixed for scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Cultures of the scale from the scrotum and/or groin in all patients showed a growth of T. rubrum. T. rubrum strains from scrotum and groins in one patient were demonstrated as the same strain by RAPD typing. The average age of patients was 34.1 ± 12.78years. The mean course was 8.2 ± 5.07days. All the patients received only topical treatment for 2weeks without recurrence. Direct smear, calcofluor-white staining and in vivo RCM study of the scrotal favus in patients showed a massive number of septate branching hyphae, while fewer septate hyphae in scales in the groin. Abundant hyphae were found only in the outer layer of the stratum corneum of the scrotum under SEM and TEM with intact bilateral cell walls, and normal nucleus, liposomes and reticulum. Few distorted hyphae structures, cell wall degeneration, degenerated cytoplasm and the autophagy phenomenon could be seen in scales from groin under TEM. Scrotal favus due to T. rubrum is still a true infection, which most often occurred in immunocompetent patients.

Clinico-mycological profile of tinea capitis and its comparative response to griseofulvin versus terbinafine.

Background and Purpose:Tinea capitis is the most common superficial mycosis in children. This disease is a contagious infection with worldwide distribution and is occasionally associated with permanent alopecia. The treatment of this infection usually requires the administration of appropriate oral antifungal agents. The current study was conducted to evaluate the clinico-mycological profile of tinea capitis and compare the efficiency of oral griseofulvin and terbinafine in the treatment of this disease.Materials and Methods:This study was conducted on 69 patients, including 23 females (33.3%) and 46 males (66.7%), clinically suspected of tinea capitis. After the confirmation of tinea capitis diagnosis through direct examination, the subjects were randomly assigned into two groups of griseofulvin and terbinafine. Demographic data, clinical and mycological characteristics, and therapeutic outcome were recorded for both groups.Results:According to the results, tinea capitis was more common in children younger than 15 years (73.9%), athletes (37.7%), and males (66.7%), and those with frontal involvement (34.8%), non-inflammatory type (68.1%), endothrix (69.6%), and Trichophyton tonsurans species (41.7%). The griseofulvin and terbinafine groups had the treatment success rates of 90.9% and 80.6%, respectively (P=0.311). The griseofulvin group had a shorter therapeutic course than the terbinafine group (P=0.129).Conclusion:Although our findings demonstrated that both griseofulvin and terbinafine were effective in the treatment of tinea capitis, griseofulvin showed a little higher efficacy in this regard. Consideration of some variables, such as age, associated risk factors, clinical type, hair involvement pattern, and dominant pathogenic species, is important in the determination of the drugs.

The Occurrence of Sooty Mold of Blueberry Caused by &lt;i&gt;Cladosporium sphaerospermum&lt;/i&gt; in Korea

In March of 2015, severe sooty mold was observed on blueberries cultivated in a farmer’s greenhouses in Goseong-gun, Gyeongsangnam-do, South Korea. Typical symptoms included a black or dark brown, superficial fungal growth on the leaves, stems, and fruit of blueberry plants. The fungal colonies on PDA were flat and black. The conidia were dark green in color, globose to sub-globose in shape and 3-5×3-4 μm in size. The ramoconidia were cylindrical and 18-42×3 μm in size. The conidiophores were dark brown, cylindrical-oblong in shape and 42-138×3-4 μm in size. To confirm the identity of the fungus(F130), the 18S rDNA as well as actin and β-tubulin gene sequences were PCR-amplified and sequenced. The pathogenicity of the isolate was then explored on 2-month-old potted blueberry plants. Based on the mycological characteristics, molecular identification, and pathogenicity on host plants, this fungus was identified as Cladosporium sphaerospermum. This is the first report on sooty mold of blueberry caused by C. sphaerospermum in Korea.

Tinea Pseudoimbricata as a Unique Manifestation of Steroid Abuse: A Clinico-Mycological and Dermoscopic Study from a Tertiary Care Hospital.

Background:Tinea pseudoimbricata, characterized by concentric scaly rings simulating Tinea imbricata is caused by dermatophytes other than Trichophyton concentricum. It is reported to occur in patients with steroid abuse and in immunocompromised individuals.Aim:To study the clinico-mycological profile and dermoscopic features of T. pseudoimbricata in immunocompetent patients.Methods:We have evaluated 14 consecutive, clinically diagnosed patients of T. pseudoimbricata with positive 10% potassium hydroxide (KOH) examination and culture, seen over a period of 6 months. Dermoscopy was performed in all patients. The demographic, clinical, and mycological features of each patient were recorded on a predesigned proforma.Results:There were seven male and seven female patients with a mean age of 27.6 years and a mean disease duration of 3.8 months. All patients gave a history of application of potent or super-potent topical steroid with or without oral/injectable steroid for varying duration. Culture isolates were Trichophyton mentagrophytes complex and Trichophyton rubrum in 11 and 3 patients, respectively. Dermoscopic analysis showed features of steroid abuse in majority of the patients.Limitation:A small sample size was the limitation of our study.Conclusion:T. pseudoimbricata is a special subset of Tinea incognito caused by injudicious and inappropriate use of topical steroid. The typical appearance should alert the dermatologists regarding the possible abuse of steroids. Most common species isolated on culture was T. mentagrophytes complex.