Bumps under armpit

An underarm lump can be most probably due to an infective condition. You could have it due to shaving or waxing or using a deodarant. Underarm lump can be caused by viral infection, allergic reaction, a swollen lymph node or a benign tumor like lipoma. It can also be folliculitis due to shaving or waxing.

Underarm lumps are axillary lymph nodes which could be enlarged secondary to infection or even trauma and in rare cases due to malignancy. They are usually enlarged when a new deodorant is used, after shaving or waxing the underarm area.