[The aging skin (author's transl)].

Aging of the skin appears in circumscribed as well as in generalized forms. The localized alterations may be subdivided in such of inflammatory origin and in hyperplastic ones. The latter include benign and also precancerous tumors. The generalized and usually premature manifestations of cutaneous senescence are almost always part of some hereditary disease which frequently also affects the viscera, sense organs, skeleton, and the nervous system.