Doctor can evaluate: Itching all over can be due to an allergic or irritant reaction to some medicine, food, virus, soap, etc... A primary care doctor can evaluate. Sometimes, the doctor will order some blood tests to check the liver, kidneys, and other organs, if there is unexplained itching. Uncommon, but possible, is overall itching due to getting parasites, such as after foreign travel.
Answered 12/9/2013
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