yes by all means, have him go to a doctor. It could be something simple like a skin allergy to a soap or detergent recently used...which the doctor can prescribe a topical cream to get rid of it. It can also be something else which like those above advised, do not come in contact with it.
Hope it turns out to be nothing serious, let us know.
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~** if you can't be good..be good at it!!~**
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~*if you can't be good..then be good at it!`*
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