Three cases of dermatomcycosis are reported, caused by Trichosporon capitatum, a yeast-like organism, belonging to genus Trichosporon of the Cryptococcaceae, which till now was isolated out of dermatological material only in a few cases. One of the lesions, characterized as "leuconychia mycotica", is a problematic task with regard to the treatment, for it is a professional infection in an offset-printer. A glycerol containing fluid for wiping his printing machine was detected as reservoir of yeastlike agents and continuously scattering infection cause. The pathogenic role of Trichosporon capitatum is discussed with regard to the present literature and to the three reported cases.