I have had the flu for a few days with a runny nose, sore throat and headache.  As well as this, a lump has developed on my armpit... and has got bigger since Monday when I first noticed it.  The lump is quite painful- even when I stretch my arm I can feel it, and when someone touches it the pain is pretty unbearable. Its under the skin and resembles a boil.  Should I go to the doctor to get it seen to? Thank for your help
Welcome to Chat Doctor. 1. The causes for the lump under the armpit / axillary region with pain and tenderness suggest infective etiology. 2. Most possible cause could be hair follicular infection with collection of pus within, abscess.3. If you are my patient I would have examined and if necessary ask for an ultrasound which will give me the nature of the lump its source and extensions.4. The treatment in this case is a small incision and Chat Doctor.  And a good post procedural care.5. Yes you need to seek doctors help as I will not go on its own.6. Do not touch, scratch, press the area - it will complicate and delay in healing. Good luck. Hope I have answered your query.Anything to ask do not hesitate. Thank you.