[Allergic phenomena in the course of dermatomycoses]

Fungi, well known as infectious factors so far, are important allergens too. A fungal id reaction is defined as a distant skin manifestation of an established fungal infection. The most typical setting is in association with tinea of the feet. The main id reactions are well established. A widespread lichen trichophyticus--eruption of small follicular papules grouped or diffuse. The eruption is symmetrical, usually pronounced on the trunk but in severe cases extending down to the lower limbs, even sometimes involving the face. The common cause of this type of id reaction is scalp ringworm of kerion type, caused typically by Trichophyton verrucosum. The treatment of the original ringworm lesion may play a role in initiation of the process. A pompholyx-like id affecting the interdigital spaces and palmar surfaces of the fingers, the palms and sometimes the dorsal surfaces of the hands. This eruption is associated with an acute inflammatory tinea of the feet and may develop spontaneously or as a result of inappropriate treatment. The palmar and web space skin may be covered with papules or vesicles. Sometimes blisters or pustules may occur. Other varieties of mycides include eczematous eruptions, erysipelas-like dermatitis, psoriasiform dermatitis, erythema multiforme, erythema annulare centrifugum, erythema nodosum, and urticaria. Adequate antifungal therapy is recommended as the treatment of allergic diseases caused by superficial fungi.