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Symptoms of PMLE are a mild to severe skin rash, usually appearing within 30 minutes to several hours of sun exposure. The rash may be itchy and have these characteristics: 1  Small bumps all over the body, predominantly in sun-exposed areas.  Sun rash progresses to dense clumps of bumps.
Causes Of Itching All Over The Body. There are many causes of itching all over the body, most of which are temporary. You may have a bug or an insect sting, or you may be dealing with a rash or the hives. If youâve experienced sunburn recently and the skin has started to peel, that may be the cause of the itch.