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Diagnosis
Conditions or ailments that are the cause of a problem that you see - your observation.

Your vet may diagnose

Equine Herpesvirus 3, Coital Exanthema

Synonyms: EHV-3

Summary

This herpes virus is spread by venereal means as well as insects and through handlers and equipment. It causes ulcerations and crusting affecting the penis and prepuce of males, and vulva of females. Lesions can also develop on the mouth, lips and nostrils.

The lesions may be painful but usually heal in two weeks, sometimes leaving areas of pigment loss. As is the case with most herpes viruses, the lesions often recur.

my vet's role

PROGNOSIS AND RELEVANT FACTORS

Infected horses become latent carriers for life, and recurrence is common.

further reading & resources

Author: Doug Thal DVM Dipl. ABVP