Table 4

Results from culture-based epidemiological studies of pityriasis versicolor lesions

ReferenceNo. of patients/no. of positive cultures% of cultures positive for: Culture medium a Location(s)Description
M. globosaM. restrictaM. sympodialisM. furfurM. slooffiaeM. obtusaM. dermatisM. pachydermatis
63 96/9397337mDASpain M. sympodialis and M. slooffiae were coisolated with M. globosa in 36.5% of patients; no association of Malassezia species with clinical form, pityriasis versicolor episode, or severity
138 23/211863884LNACanadaCFU from pityriasis versicolor skin was equivalent to that from healthy skin and significantly more than that from psoriasis, seborrheic dermatitis, and atopic eczema skin
136 1292559.51142LNACanada1 colony per culture was processed for identification; no species was particularly associated with body site
188 100/8756.5210251mDATunis18 mixed cultures of M. globosa with M. sympodialisor M. furfur
180 70/4840258mDAIndiaOnly direct-microscopy specimens were cultured; no mixed cultures identified
53 90/8757.531511mDAIndiaNo difference in isolation rates of species in patients ≤20 or >20 yr old as well as between genders
259 166/11644930710.5mDAIranPrevalence of Malassezia species varied according to age, gender, and anatomic location
286 69/61482841LNAIran (Northern)No correlation between Malassezia species and body site sampled or age
311 94/755392548DAk IranNo difference in distribution of species between healthy and pityriasis versicolor skin
255 90/9063141048mDABosnia and HerzegovinaNo mixed cultures observed; upon direct microscopy of pityriasis versicolor scales, evidence of mixed species was found in 37% of isolates; no association of species and clinical appearance of lesions
112 76/717721353mDAGreece M. globosa was isolated in 90% of cases in association with one of the other species
122 218/239381372120.5mDAArgentinaIn 15/218 patients, 2 species were coisolated, and in 3/218 patients, 3 species were coisolated; percentages refer to isolates and not patients
89 427/25064534mDAIndia23/250 patients had mixed cultures with M. globosa
185 98/9114127.534106LNAIndonesiaWithout reaching statistical significance in the isolation rate, M. furfur was not found in patients with duration of disease of <1 mo; no difference in distribution of species and age or gender
173 97/44483616mDATurkeyMixed species were not isolated; statistical differences in species distribution and duration of disease, sun-exposed or sun-protected lesions, hypo- or hypepigmented skin
  • a mDA, modified Dixon's agar; LNA, Leeming-Notman agar; DA, Dixon's agar.