Urticaria is complicated to diagnose by its symptomatic overlap with other skin conditions and the frequent misclassification ...

Scarlet fever, or scarlatina, is a bacterial infection that causes a distinctive bright red sandpaper-like rash.

Migratory polyarthritis is the most common symptom in acute rheumatic fever. Subcutaneous nodules arise over the bones and tendons, as well as a rash that starts on the trunk and extends to the limbs.

Rheumatic fever can lead to painful and inflamed joints, a specific type of rash, or heart valve damage, according to medical experts. If the bacteria from a strep throat spreads through the body ...