<s>[INST] I have a sore on the inside of my cheek. I do have oral herpes but ive never had a cold sore on my inner cheek. it hurts like one, but im not sure if it is a cold sore or a canker sore? also, it is directly in a spot where my teetChatDoctore together so i am wondering if i may have bit myself, but it hurts quite badly and has been there for a few days now. help! [/INST] Hi. Thanks for the query. As per your complaint and explanation of symptoms it does not seem to be a cold sore and can either be a CANKER SORE or a TRAUMATIC ULCER caused by cheek bite. It is a painful condition, and you can take OTC anti-inflammatory painkiller like Ibuprofen. You can apply a numbing gel like Ora gel over the sore for relief from pain and discomfort especially during meals. You can also apply a steroid based oral paste like Analog in Or abase over the ulcer to reduce inflammation. Warm saline gargles will help. In case if the ulcer does not heal or start resolving in a week or so you should consult your treating physician and get evaluated for the cause of the ulcer and get checked for herpetic cold sores and in case of cold sore antiviral oral and topical treatment like Acyclovir has to be taken. Hope this helps. Regards. Chat Doctor. . </s>