Prevalence and clinical features of pityriasis versicolor in children (original) (raw)
Related papers
Pityriasis Versicolor in Children and Adolescents: an Update
Current Fungal Infection Reports, 2019
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. Recent Findings The typical morphology and topography of PV allow us to make a quick diagnosis, but atypical presentations have been described. Diagnostic tools, such as dermoscopy, can also reveal patterns that allow the evaluation of characteristics of scales and pigment in lesions. The discovery of new species and new mechanisms of interaction with the host has broadened the panorama of aetiological possibilities. Summary Although PV is a common disorder, extensive research is necessary to better understand the pathophysiology of the disease, immunological characteristics of the pathogen-host relationship and resources needed to precisely diagnose the disease, treat the disease, and avoid its chronic and recurrent course.
Our Dermatology Online, 2017
Pityriasis versicolor (PV) is a superficial fungal infection of skin caused by yeast Malassezia. Typical lesions are multiple small, round macules that coalesce to form confluent lesions. Eruption varies in color from patient to patient, but each person's lesions are usually of a single hue. Here we present a combination of both hypo and hyperpigmentated lesions of PV in a single patient. On treating the patient for 4 weeks with antifungals, complete clearance of hyperpigmented lesions were seen whereas hypopigmented ones became more accentuated.
Clinico Epidemiological and Mycological Study of Pityriasis Versicolor
Introduction Pityriasis versicolor (PV) is a superficial fungal infection of the stratum corneum caused by a dimorphic fungus, Malessezia species. It is a common dermatological condition with worldwide distribution and especially prevalent in the tropical region with high temperatures and humidity. Clinically, it is usually asymptomatic with frequent recurrences and cosmetically unpleasant. Methods A prospective cross-sectional study was done in all patients presenting with signs and symptoms of PV. Patients under topical or oral antifungals for the past 4 weeks were excluded. Diagnosis was made clinically on history and examination. Skin scrapping was examined with 10% KOH under a direct microscope, Wood's lamp examination was done to observe the fluorescence. Results Out of 102 cases, the male to female ratio was 1:1 and PV was found to be most common in the age group of 11-20 (37.2%). Most of the presented cases were asymptomatic (76.5%). Hypopigmented pattern was the most common morphology observed (44.1%) and chest and back was the most commonly involved sites. On direct microscopic examination of skin scrapping, KOH was positive in 73.5% of cases while fluorescence was observed in 71.6% on Wood's lamp examination. Conclusion PV is one of the most common superficial fungal infections, especially in tropical areas where the prevalence is expected to be more. Only a handful of studies have previously published in our country regarding the clinicoepidemiological and mycological studies of PV.
Isolation of Malassezia globosa and M. sympodialis from patients with pityriasis versicolor in Spain
Mycopathologia, 2002
Pityriasis versicolor is a superficial infection of the stratum corneum by several yeast species formerly collectively named Malasseziafurfur. The genus Malassezia has been recently enlarged with new species. With the exception of M. pachydermatis, the remaining six species have an absolute requirement in vitro for supplementation of long-chain fatty acids in media. These lipophilic yeasts comprise six species: M. furfur, M. globosa, M. obtusa, M. restricta, M. slooffiae and M. sympodialis. The aim of this study was to establish whether there was any association between the various species of Malassezia and pityriasis versicolor lesions. Thus, we studied the isolates from 79 patients with pityriasis versicolor, both from lesions and from apparently healthy skin close to the visible lesions. In pityriasis versicolor lesions, the species most frequently isolated was M. globosa (90%), followed by M. sympodialis (41%). Almost all isolates (99%) belonged to one of these two species. The ...
2019
DOI: 10.21276/sjams.2018.6.12.48 Abstract: Malassezia is opportunistic lipophilic yeast found in areas rich in sebaceous glands of human beings and animals. Pityriasis versicolor (PV) is the most common skin disease caused by genus Malassezia, characterized by patchy discoloration of skin ranging from hypo to hyper pigmentation or erythematous skin lesions of stratum corneum. It has also been shown to be associated with deep invasive infections in immunocompromised patients, especially those receiving intravenous lipids or with central venous catheters. Recurrence rate of Malassezia in spite of treatment is high, about 60% in first year and about 80% in second year. Thus, in order to prevent morbidity, recurrence and invasive infections, early laboratory diagnosis and treatment of the condition is required. Aim of the present study is to identify and speciate Malassezia isolates from clinically suspected cases of Pityriasis Versicolor and to know the local distribution of various sp...
Pityriasis Versicolor on the Face-Wrong First Diagnosis of Vitiligo
IBIMA Publishing, 2013
Pityriasis versicolor is a superficial infection of the stratum corneum caused by Malassezia yeasts. It is reported in a high incidence especial ly in warm and humid areas; clinical manifestations include scaly hypopigmented or hyper pigmented macules in characteristic areas of the body: chest, back, abdomen and proxima l extremities. We describe a case of Pityriasis versicolor (hypopigmented) localized only on the face in a 10-year-old boy. The first diagnosis was vitiligo, the child underwent detaile d and investigations about wide range in the Pediatric Hospital, the family was very anxious and the treatment proposed (phototherapy type UVB short wave (20 seances of UVB), emollients and topical steroids) was unsuccessful.
Identification of Malassezia species from suspected Pityriasis (versicolor) patients
Bangladesh Journal of Medical Microbiology, 2017
Pityriasis versicolor is a chronic, superficial fungal infection affecting the superficial layer of a stratum corneum. Malassezia furfur is the major species involved in pityriasis versicolor. Currently many researchers reported increase in the incidence of other species as a causative agent of pityriasis versicolor. Isolation and identification of Malassezia species from suspected Pityriasis versicolor patients was conducted in the Department of Microbiology and immunology Bangabandhu Sheikh Mujib Medical University (BSMMU) from September 2013 to August 2014. Ninety two clinically diagnosed patients of Pityriasis versicolor were studied and samples from skin lesion were processed for direct microscopy and culture. Species of Malassezia were identified by cultural characteristics in Dixon's agar media by macro and microscopic observation of the colonies and by catalase test, urease test, esculin test and tween assimilation test. A totalof 92 cases 70(70.08%) were positive by direct microscopy and 50(54.34%) were positive by culture. Malassezia globosa was found in 38(76%) cases as the commonest etiological agent and Malassezia furfur was found in 10(20%) cases and Malassezia obtusa in 2 (4%) cases respectively.
2001
Lipophilic yeast of the genus Malassezia (Pityrosporum) belongs to the normal flora of human skin and many warm-blooded animals. These fungi can produce a diverse range of diseases that the best known and most frequent of them is pityriasis versicolor, a c hronic recurrent skin disease occurring primarily in tropical regions. The genus Malassezia has been recently enlarged to include seven distinct species. Very little information has been documented about identifying Malassezia species in Iran. This survey was undertaken to present a practical approach for differentiation of all Malassezia yeasts isolated from clinical materials of patients with pityriasis versicolor for the first time in Iran. The presence of the disease was confirmed on the basis of the observation of budding yeast cells and short curved hyphae in skin specimens by direct microscopy. Malassezia yeasts were isolated after culturing the samples on modified Dixon (mDixon) agar. A combination of different characteri ...
Anais brasileiros de dermatologia
Pityriasis versicolor (PV) is a cutaneous pigmentation disorder caused by a lipophilic yeast of the genus Malassezia sp. It is a superficial mycosis characterized by well-defined, slightly scaly skin lesions of variable color. In Brazil, the number of reported cases is small, and there are few epidemiological studies. to assess incidence, characteristics of the lesions, effectiveness of the Zileri's Sign procedure, and the epidemiological profile of PV in the urban area of Buerarema - Bahia. Biological samples were collected on pre-established days at Basic Health Care Units from July to September 2010. Sample collection was followed by laboratory diagnosis using Porto's Method. Of the 158 patients with suspected PV participating in the study, 105 (66.5%) were positive; 72 (68.6%) were female and 33 (31.4%) were male. Sex and location of lesions showed statistically significant differences (p<0.05). The region with the highest rate of cases of PV was found to be the cente...