If : If you are a middle aged adult, it is possibly shingles if you are noticing a tingling rash going down only one arm. It could be a sign of a "pinched nerve" in the neck or neuropathy or many other possibilities. Is there a rash? I would recommend you have this evaluated by a physician.
Answered 3/26/2019
5.4k views
Psoriasis or Allergy: If you have roughened patches on the skin, the psoriasis is most likely otherwise you have allergic reaction of some type.
Answered 2/18/2020
4.9k views
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