Last year after lots of snorkeling with wetsuit I developed Folliculitis, which was treated topically and with oral antibiotic. Presented with similar symptoms as yours. It is also commonly caused by hot tubs that are not properly maintained.
+1 for a visit to a Dermatologist!
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F Thomas
"Life is like riding a bicycle. To keep your balance, you must keep moving."
Albert Einstein (1879-1955)