[Diagnosis of eczema. Can you recognize what your patient's symptom?].

The term eczema is applied to specific non-infectious inflammatory reactions of the skin, and covers a number of etiologically highly heterogeneous conditions which, however, demonstrate common features in terms of clinical presentation and pathogenesis. Eczematous disorders account for approximately 20% of the dermatological disturbances. They include allergic, contact and irritant contact dermatitis, atopic dermatitis, seborrheic dermatitis, nummular-microbial and dyshidrotic eczema, and stasis eczema. They have a high individual and socio-economic impact, and are dependent on individual predisposition.