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A 17-year-old male asked:

Red bump on arm feels like a ball hurts only when i rub or push down noticed it today making my left shoulder kinda sore could it have ben poison spid

1 doctor answer2 doctors weighed in
Dr. James Rochester
Family Medicine 27 years experience
Doubtful spider bite: Spider bites are painful, form a small black ulcer from the venom the spider injects with a bite. Your lump does not sound like this. Many, Many things on the list of what this might be (lipoma, inclusion cyst, lymph node) to name a few. Only way to know what it is, evaluation. Can watch for next 1-2 weeks. If still there then eval, if worse eval. Also leave it alone to not irritate it. Dr R
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Last updated Jul 7, 2015

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