Viral exanthems Unravelling viral rashes

Common causes of viral exanthems in Australia include herpesviruses, enteroviruses, parvovirus B19, varicella, measles and rubella viruses and mosquito-borne alphaviruses. The cause can often be diagnosed clinically from the rash distribution and morphology, confirmed only when necessary with serological or PCR tests. Most viral exanthems are self-limiting, requiring supportive care alone.