<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi. I have on my upper left side a small gum colored zit or bump on my gum. I just noticed the bump yesterday but it has been hurting for days. When I touch or push it the pain comes. If I leave it alone that side of my mouth is just sensitive. Any ideas what it could be?  <response>: Hi! You got a common pattern lump! In day to day practice I often get such lump on the upper jaw causing sensitivity and pain in the mouth and after proper examination and some tittle investigations like microscopic pathological test, I come to following diagnoses:1. An abscess in periodontal location 30 cases2. Infected periapical cyst 20 cases3. Minor injury to gum mucosa and related infection edema 10 cases4. Pyogenic granuloma like bloody benign tumor-like lesions 30 cases5. Other benign tumors 8 cases6. Cancer 2 casesTherefore maintain oral hygiene and see a dentist for relevant antibiotics necessary steps in needed. Regards, 