<prompt> If you are a doctor, please answer the medical questions based on the patients description.i have a concern about 3 months ago i got a knot under my armpit and went to the doctor and he told me it was a boil... and about a week ago my husband was n the hospital for the same knot under his armpit and this am i woke up with another one... when it poops its purple and has white stuff come in out of it  <response>: Hi.it is best if you consult with a doctor, preferably a general surgeon, for medical and physical examination. Based from your description, it could be hi Chat Doctor. These lesions usually occur on the underarm, especially after shaving or plucking andor usage of deodorants with strong chemical contents. Hair follicles get infected. Inflammation and subsequent abscess formation occur. Medical proper antibiotic regimen and surgical excision or incision and 