Hi ! Good afternoon. I am Dr Shareef answering your query. From the history of the lump following shaving of the armpits, it seems that you have got a furuncle (infection in the hair follicle) on the axilla. If I were your doctor, I would examine it clinically, and if suspected to be due to infection, would prescribe a course of broad spectrum antibiotics along with a probiotic and an anti inflammatory drug with a proton pump inhibitor. This should be sufficient to resolve the lesion. In case it did not respond, and increased in size, I would refer you to a general surgeon for a re assessment of the lesion. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing health care magic to clear doubts on your health problems. Wishing you an early recovery. Dr Shareef.