<s>[INST] Hello. I have a lump on my chin. It is a non-moving sharp lump. It is on the left side of my chin. You cant see it on the outside. But it can hurt at sometimes. People feel it and they say it is most likely a bone spur. But im not sure. [/INST] Hi Dear, Welcome to Chat Doctor. Understanding your concern. As per your query sharp lump on the chin which is not very obvious from outside could be because of salivary gland dilatation which could be seen as a lump in chin area, it could be because of sebaceous cyst as well. Need not worry. Visit general surgeon once and get it examined. Go for ultrasound to check the exact cause and to make out diagnosis. Go for massage therapy of this particular area. Take proper course of antibiotics to subside infection. Digital manipulation techniques will help to reduce this. Chew on citrus substances. Incision and Chat Doctor.  Hope your concern has been resolved. Get Well Soon. Best Wishes, </s>