Oncology Questions? Ask an Oncologist for Answers ASAP
Your description sounds that he may have had either a boil or sebaceus cyst. I do NOT ADVISE YOU TO TRY AND TREAT YOURSELF AT HOME
He should see his doctor for evaluation and treatment ...
If boil then it may need to be drained and treat with course of antibiotic
If sebaceous cyst then excision of capsule best to prevent recurrence ...
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Thank you and Best Regards,
Anthony Bray MD