Itchy skin without a rash can be an annoying problem ... tingling, or burning in the forearms, shoulder, or upper back.

The rash is most often found on the forearms, chest and neck. The reaction is common at the start of the summer when the skin hasn’t been exposed to the sun in quite some time, Jacob adds.

An exanthem is any eruptive skin rash that may be associated with fever or other systemic symptoms. Causes include infectious pathogens, medication reactions and, occasionally, a combination of both.

Lyme disease often causes a rash that can be distinctive and resemble a bull’s eye. The rash can also change over time as the bacteria spread. Lyme disease can result from the bite of a black ...