Background: According to the literature tinea capitis in adults is sup
posed to be rare; we have recently observed a significant increase in
cases. Methods: Epidemiological, clinical and mycological features wer
e studied in all adult tinea capitis diagnosed over 1 year in our depa
rtment, Results: Eight cases were observed: 75% of them were women, 50
% never traveled and 62.5% had an underlying immunosuppressive disease
. Scalp scaling and alopecia were the most frequent clinical features,
A zoophilic dermatophyte was recovered in 50% of cases, Conclusion: T
hese cases represent 11% of all tinea capitis observed in the same per
iod of time (higher than the 3-5% observed in the literature). Secreti
on of sebum and colonization by Pityrosporon orbiculare are supported
to protect the scalp against dermatophytic invasion after puberty, but
an immune defect may also facilitate hair invasion. The erroneous not
ion of the disease being uncommon and the frequent atypical clinical p
resentation require a high degree of clinical suspicion.