Viral Rash

Scarlet fever like - adeno, entero, hepatitis B and C

Star complex - monoarticular arthritis, sore throat, rash; favors teen females; parvo B19, hepatitis B, adeno, echo, Coxsackie, EBV

Most viral rashes are worse in sun-exposed (especially varicella)

Morbilliform DD: viral (measles, rubella, roseola, mononucleosis; bacteria (arcaneo, scarlet fever); papulosquamous GVH, psoriasis, PR); reactive (urticaria, EM)