What causes an armpit lump with soreness, redness and tenderness?
Patient: I have had a lump in my arm pit which was quite sore with redness around, this has now reseeded to a small lump. This has taken about 3 weeks and now the lump is still there but I have to look for it. My both arm pits are tender. I have in the past (10 years ago) had rectal cancer so try not to get paranoid. Doctor: if you are female then it is related to benign changes in the axillary mammary tissue and if you are male then these are due to infection of the skin adnexal tissue or sebaceous cyst!i think not to worry muchall the best!