Other types of dermatitis

Abstract

This chapter covers dyshidrosis, seborrheic eczema, nummular eczema, and the very rare exudative discoid lichenoid dermatitis (oid-oid disease). Although different causes of dyshidrosis are known, our knowledge of the causes of nummular eczema and seborrheic dermatitis is still very limited or controversial. The chronicity of all these diseases remains the essential challenge in the everyday life of dermatologists.