If your friend is diabetic, the medications could be a factor. Has she done any 
research on the meds to see if this is a side effect? Also, if she is diabetic, 
she  has elevated sugar levels which can cause candida albicans. This fungus 
can attack the scalp and sometimes you dont know it. It doesnt always have 
visable symptoms. An inexpensive way to find out if it was fungus, would be to 
treat with an antifungal shampoo and see if that helps.
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