The doctor may also test tissue fluid or smears from the child's lesions to rule out skin parasites or infections that mimic atopic dermatitis, such as bacterial infections, scabies, or herpesvirus infections.
Respiratory infections caused by the herpesvirus can sometimes result in reproductive troubles, including the abortion of a pregnancy.
Two types of viruses, called herpesvirus hominis and varicella-zoster virus, have also been identified as causing otitis externa.
About 85 percent of the time, roseola is caused by a virus called human herpesvirus 6 (HHV-6).
Feline calicivirus and herpesvirus are implicated in approximately 80 to 90 percent of cases.