<s>[INST] Yes thankyou I went to dentist yesterday and he noticed what he thought was a broken blood vessel on toward the back of my mouth onthe roof he said if it does not clear up within. A week he wants to send me to a oral surgeon how do I know if it is a broken blood vessel [/INST] Hello have gone through your query. Broken blood vessel ll show some amount of redness or blueish colored area. It can be due to various reasons like trauma from eating very hot and spicy food.  Smoking or chewing tobacco intake. Do you have any discomfort in that area? You can wait and watch for 7-10 days if there is any change like size or increase in no. Then I would advise you to visit an oral surgeon.Meanwhile, you can use an antiseptic mouthwash. Hope this answer helpsRegards </s>