Strep throat is a highly contagious infection caused by group A Streptococcus bacteria (Streptococcus pyogenes); it is common in children but affects adults too. Strep throat symptoms include a sore ...

Recently, it has also been implicated in outbreaks of generalized petechiae. Pityriasis rosea in children may present atypically by involving the face and extremities. Erythema multiforme is often ...