<s>[INST] I just had a CT Soft Tissue Neck with Contrast because of pain and swelling under my left jaw line. The results Mild bilateral submandibular gland prominence is present. Normal Neck CT. However, the swelling and pain ache like a tooth ache, I can t even lay on my left side. All glands are normal, No treatment from my doctor, although I am in constant pain under my left jaw bone, what can I do? [/INST] It may be related with infection and swelling in mandibular gland tissue, it can also be a both related issue. I suggest to check with dental and if everything is fine with tooth then start taking anti-biotic(amoxicillin) and painkiller,anti-inflammatory tablets along with hot and cold pack use at painful area below jaw. Also do not eat anything hard on affected side and even do use only warm water to Chat Doctor.  And keep cotton in your ear while traveling. Do not get expose to cold environment as well do not have cold  </s>