Out of more than 3,000 skin diseases, how do you know what condition you have? These 23 skin rash pictures and expert tips ...

For instance, clusters of small bites on the ankles could signal chiggers while larger welts on exposed arms and legs might .

“They appear as small, red, painful or itchy bumps that can develop pus-filled heads,” says the expert. This scalp condition is typically benign, according to research published in StatPearls in 2023.