Not measles: Measles is a systemic rash -it wouldn't be localized just under one arm. If it's itchy I wonder if it might be 'contact dermatitis' -an allergy to something? say a cream, lotion, deodorant? The fact that it's weeping clear fluid means the tissue (skin) is damaged from the rash. Not sure if there's any fever but u may want to apply antibiotic ointment -like bacitracin. I recc going back to the doc
Answered 7/23/2014
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