Genital herpes: natural history and treatment of acute episodes.

Genital herpes is a common, distressing infection whose incidence has been underestimated. Recent serological surveys, employing type-specific antibody assays, show a rising prevalence of previous herpes simplex virus (HSV) type 2 infections in post-adolescent populations in developed countries; many of these infections have been asymptomatic. In some geographical locations, HSV-1 infections are a common cause of first episodes. They may occur in stable, monogamous relationships and are less likely to recur than genital infections caused by HSV-2. The clinical features of first episode genital herpes show marked individual variation in severity; they tend to be more severe in women than in men. Local and distant complications are common in immunocompetent individuals and may be life-threatening in those who are immunocompromised. The psychological and social consequences which result from the life-long infection and its risks of transmission to new sexual partners often prove more disabling to affected individuals than do the milder physical symptoms associated with recurrent episodes. Counselling, support, and patient education are essential components of management. Acyclovir is clearly established as the first choice therapy in both first and recurrent episodes of genital herpes. This drug has potent antiviral effect and provides significant clinical benefit in first episodes. Systemic therapy for initial episodes does not prevent either the establishment of latency or the development of future recurrences even when used in high or prolonged dosage. Episodic treatment of recurrences, with either oral or topical acyclovir, requires early patient initiation of therapy to provide significant clinical benefit.