<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi i have a reacurring lump on my left shoulder that has blood,and pusc,smells like vinegar,its invected,and hurts,tryyedn hot showers to open and drain it no luck,have a hydroculator but didnt get it hot enough,do i need to go the doctor,and get it drainedantibiotic,really cant afford thatn please what do i do.  <response>: Hi.based from your description, it could be an infected sebaceous cyst or an abscess formation from a previous infection. A consult with a doctor, preferably a general surgeon, is best for physical examination and clinical evaluation. Diagnostics such as ultrasound and medical proper antibiotic regimen and surgical excision andor incision and Chat Doctor. Proper hygiene and daily wound care will also be recommended. Hope this helps. Good day!! 