Pitiríase Versicolor

BACKGROUND: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. OBJECTIVES: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. METHODS: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. RESULTS: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 center of the city, with 40.9% of diagnosed cases. The most affected age group was between 10 and 19 years. There was a significant association between the results produced through Zileri's Sign and Porto's Method in relation to positive and negative results (p<0.05). CONCLUSIONS: The results showed a higher prevalence of PV among individuals at puberty. The Zileri's Sign method proved to be counterproductive, because it showed low efficacy as a method for clinical diagnosis, yielding negative results for 36 (34.3%) patients who had been diagnosed with PV through laboratory examination.

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“…There is slight collapse of the keratin in this region, which facilitates observing fine desquamation. 5,20 …”

Section: Introductionmentioning

confidence: 99%

Pityriasis versicolor: clinical-epidemiological characterization of patients in the urban area of Buerarema-BA , Brazil

Santana

Azevedo

Filho

2013

An. Bras. Dermatol.

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“…the palms and soles of the feet) (Peyrefitte, 1997;SFD, 2005). The face is the most common location reported in most studies (Miskeen and Shroff 1984;Faergemann 1999;De Oliveira and Steiner 2002;Jena et al, 2005;Silva-Rocha et al, 2017), though the neck and trunk were the common locations reported in Burkina Faso (Zida et al, 2015). In this study, the back was the most common location of mycosis, followed by the chest.…”

Section: Discussionmentioning

confidence: 99%

Pityriasis versicolor profiles among outpatients of the Dermatology Department of the Teaching Hospital of Yopougon Abidjan, Cote dIvoire

Konaté¹,

Barro-Kiki²,

Kassi³

et al. 2017

Afr. J. Microbiol. Res.

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“…On the face, lesions are more common in children than in adults. 1,18 The following frequencies of lesions were observed through a study performed in Manaus (Brazil): widespread (31.50%), trunk (20.65%), upper limbs (13.75%), lower limbs (9.50%), face (8.85%). 19 …”

Section: Discussionmentioning

confidence: 99%

“…It is a pigmentation disorder clinically characterized by the presence of macular lesions, initially perifollicular with fine scaling, variable color spanning from white to brown and occasionally becoming erythematous. 1-3 …”

Section: Introductionmentioning

confidence: 99%

Treatment of pityriasis versicolor with topical application of essential oil of Cymbopogon citratus (DC) Stapf - therapeutic pilot study

Carmo

Pereira

Cavalcante

et al. 2013

An. Bras. Dermatol.

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BACKGROUND Pityriasis versicolor is a fungal infection caused by Malassezia spp. that has frequent relapses. OBJECTIVES The main objective of this research was to perform phase I and II clinical studies, using formulations containing essential oil of Cymbopogon citratus in patients with pityriasis versicolor. METHODS Phase I study included twenty volunteers to ascertain the safety of the formulations. In phase II, 47 volunteers randomly received essential oil formulations at 1.25 μL/mL concentration, for forty days. The shampoo should be applied three times a week and the cream twice a day. A control group in phase II, consisting of 29 volunteers, received the same formulations but with 2% ketoconazole as the active ingredient. RESULTS No significant adverse events were observed in volunteers during Phase I. In Phase II, 30 (63.83%) volunteers using essential oil and 18 (62.07%) using ketoconazole remained until the end of the study. We observed a predominance of lesions in disseminated form, with M. sympodialis detected as the predominant agent identified in cultures. After 40 days of treatment, the rate of mycological cure was 60% (p <0.05) for the group treated with essential oil of C. citratus and over 80% (p <0.05) for the group treated with ketoconazole formulations. CONCLUSIONS Notwithstanding the safety and antifungal effects observed in this study after application of formulations containing the essential oil of C. citratus, further studies with larger populations should be performed to confirm the actual potential of these formulations in the treatment of patients with Pityriasis versicolor.

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Pitiríase Versicolor

Cited by 12 publications

References 36 publications

Pityriasis versicolor: clinical-epidemiological characterization of patients in the urban area of Buerarema-BA , Brazil

Pityriasis versicolor: clinical-epidemiological characterization of patients in the urban area of Buerarema-BA , Brazil

Pityriasis versicolor profiles among outpatients of the Dermatology Department of the Teaching Hospital of Yopougon Abidjan, Cote dIvoire

Treatment of pityriasis versicolor with topical application of essential oil of Cymbopogon citratus (DC) Stapf - therapeutic pilot study

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