[Herpes and skin lesions: what's new?].

The spectrum of clinical lesions of herpes has grown, since the research of viruses by PCR permitted to bind to their etiology discrete or atypical lesions, and even, to display periods of asymptomatic viral excretion. These variable clinical aspects depend on the balance between, on the one hand, the qualitative and quantitative virulence of HSV and, on the other hand, the quality of the immunological defenses of the patient. So, "herpetic primary infection" and "herpetic recurrences" are serological definitions; the clinical aspects of the different stages can be interchangeable. Cultures or PCR and type-specific serologies also showed the increased frequency of HSV1 in genitals, explained by the increased oro-genital sex, since the beginning of AIDS.