An efflorescence or discoloration of the skin; an eruption or breaking out, as in measles, smallpox, scarlatina, and the like diseases; -- sometimes limited to eruptions attended with fever.

Skin rash.

A condition frequently seen in children, marked by intermittent fever lasting 3 days, falling by crisis, and followed a few hours later by a rash on the trunk.

Rash caused by bacteria, virus, or illness

eruption on the skin occurring as a symptom of a disease

An eruption on the skin.

A skin eruption occurring as a symptom of an acute viral or coccal disease, as in scarlet fever or measles.