[Fungus diagnostics in practice].

For the practising dermatologist the following examinations for the diagnosis of a fungus infection are recommended: unstained and stained preparations, as well as cultural differentiation of the causative organisms. In case of a first negative culture of a cutaneous mycosis histological examination is advised. The section should be stained by the PAS method. In all mycotic diseases of the skin, skin appendages and mucous membranes, which are resistant to therapy, an intracutaneous test with the specific antigen should be performed to examine the cellular immunity against the cultured organism.