A non-specific viral exanthem is a widespread erythematous rash caused by a viral infection. Depending on the associated virus there may be fever, coryza, sore throat, malaise and anorexia.
The underlying cause of the rash may be due to:
- A toxin produced by the virus
- Damage to the skin by the virus
- Immune response to the virus
Treatment is supportive if required. If particularly pruritic, antihistamines or emollients can be used. Antipyretics may be useful if a child is uncomfortable with fever.
References
https://dontforgetthebubbles.com/common-rashes-module/
https://dermnetnz.org/cme/viral-infections/nonspecific-viral-exanthems/
https://my.clevelandclinic.org/health/diseases/22510-viral-exanthem-rash
https://www.youtube.com/watch?v=2x8rHldFjnw (PED cases)