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

Santana JO, Azevedo FL, Campos Filho PC - An Bras Dermatol (2013 Mar-Apr)

Bottom Line: 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).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.

View Article: PubMed Central - PubMed

Affiliation: State University of Santa Cruz (UESC), Ilheus, BA, Brazil. julianosantana20@hotmail.com

ABSTRACT

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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Related in: MedlinePlus

Distribution of lesions according to anatomic location
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Related In: Results  -  Collection

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f01: Distribution of lesions according to anatomic location

Mentions: The human body was divided into eight anatomical regions to facilitate understandingthe results related to location of the injuries caused by PV (Figure 1).


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

Santana JO, Azevedo FL, Campos Filho PC - An Bras Dermatol (2013 Mar-Apr)

Distribution of lesions according to anatomic location
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3750883&req=5

f01: Distribution of lesions according to anatomic location
Mentions: The human body was divided into eight anatomical regions to facilitate understandingthe results related to location of the injuries caused by PV (Figure 1).

Bottom Line: 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).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.

View Article: PubMed Central - PubMed

Affiliation: State University of Santa Cruz (UESC), Ilheus, BA, Brazil. julianosantana20@hotmail.com

ABSTRACT

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.

Show MeSH
Related in: MedlinePlus