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Since it is pain-full,it seems to be a FOLLICULITIS
or a BOIL.You need not worry.You should consult a dermatologist
for this ,who would prescribe you a course of oral antibiotic along with some topical antibiotic
cream.You can also take anti inflammatory painkiller to reduce the pain.
Since it is hurting you,it is not a cancer.
I would not advice a hot towel here.Please consult a skin specialist for proper prescription.