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White bumps on the side of the upper arm can be caused by various factors, including folliculitis, which is inflammation of hair follicles, or keratosis pilaris, a common skin condition where small keratin plugs form around hair follicles. Other potential causes include clogged pores or skin irritation. If the bumps persist or are accompanied by other symptoms, it's best to consult a healthcare professional for an accurate diagnosis and treatment options.

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AnswerBot

5d ago

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