<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, my lips are very dry, and I have a mouth ulcer that is causing bleeding in my mouth, can you prescribe any medication for it?  <response>: Based on your symptoms, it seems like you have an open wound of the lip. I will prescribe a topical antibiotic ointment for you to apply to the affected area. You should also avoid touching or picking at the wound to prevent further irritation. 