Korean J Dermatol.  1982 Oct;20(5):631-639.

The Incidence of Pityrosporum Orbiculare and Pityrosporum Ovale on Normal Skin

• Chin HS
• Han SW

Abstract

In microscopical survey of clinically normal skin, P. orbiculare was found to be present on scalp, face, anterior chest, back, arm and leg in 68.2%, 68.3%, 90.2%, 86.4%, 28.6% and 16.7% respectively, and P. ovale was present in scalp, face, anterior chest, back, arm and leg in 84.1%, 56.1%, 51.2%, 38.6%, 19.0% and 7.1%. P. ovale was dominant species in scalp, on the other hand P.orbiculare was dominant species in anterior chest and back. The large number of spore of P. ovale was present on scalp, on which P. ovale was dominant species, and on anterior chest and back, the number of spore of P. orbiculare was more increased than the numbers of P. ovale. The hyphae, identical in size and shape with those of Malassezia furfur, were found on scalp in one subject. In cultural survey, the pcsitive culture rate in P. orbiculare was showed in over all from 87.5% to 80.8% and in P. ovale from 33.3% to 88.2%. Germ tube formation on culture was found in 3 subjects on anterior chest and in one subject on back.

MeSH Terms

Arm
Hand
Hyphae
Incidence*
Leg
Malassezia*
Scalp
Skin*
Spores
Thorax