Retro-auricular or auricular dermatitis in atopic dermatitis (AD) is c
ommon and important for the diagnosis of AD in infancy and even in adu
lthood. Particularly, ''infra-auricular fissures'', acute eczematous c
hanges like fissures at the adhesive junction of ear lobes, seem to be
prominent features for the diagnosis of AD. Of 137 patients with AD,
81.8% showed present or past existence of infra-auricular fissures, bu
t only one of the 30 controls. Of the 46 patients with severe AD, 98%
had infra-auricular fissures, compared to 74% in those with moderate a
nd mild AD. Our findings suggest that infra-auricular fissures are imp
ortant for the diagnosis of AD and should be cited in a list of criter
ia for the diagnosis of AD.