probably an abcess or boil. use warm compresses to try to get it to pop if you are unable to get it to head to pop get to a doctor as they will have to lance it in order to get the infection out. ive had two in my armpit and my hubby had one in his belly button they hurt like outrageously bad until they finally pop.
lump in the armpit? . i have a lump in my left armpit from the outside it just looks like a rash the skin is reddish and just slightly elevated but that is unrecognizable until you touch it but it is painful to touch. also it hurts when i stretch my arm upwards and even when i'm resting on my left arm and any sort of pressure is put on it. the pain keeps fluctuating past few days it's been better but its still there. i've had this lump for more than two weeks now. i'm a 19 yr old female have hypothyroid am overweight