### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
I had two root canals August 2016.  I am having moderate aching in my left side of my face and especially at night some throbbing so that it is difficult to sleep. My regular dentist X-rayed my 3 upper teeth and 3 lower teeth and didnt find anything wrong. He thought I had TMJ. I dont think that is it.  My regular Dr. gave me meds that he thought would help for 10 days. It was AMOX-CLAV 875-125 MG. It did seem better during that time, but since I have been off since this last Thursday morning, it seems worse. I will call my endodontist tomorrow, but anything else I shoud do?

### output:

Welcome to the Chat Doctor platform, Thanks for the query. Facial pain can arise due to number of reasons. Common causes include dental infection, abscess, TMJ problem, sinusitis, migraine headache, sinusitis, herpes zoster or nerve problems such as trigeminal neuralgia. Type of pain, its intensity, duration, onset, aggravating and relieving factors may define the problem. A dull, throbbing pain on one side of your face generally occurs secondary to dental infection. Other pain types such as sharp electric current like pain define nerve problem, headaches feel like a stabbing sensation or can throb and ache. TMJ problem may present with pain and tenderness around joint area, face, neck, ear and on chewing or opening and closing mouth. Because there are many causes of facial pain, it is recommended that you talk to your dentist in detail about the type of your pain symptoms so that he/she can come to a definite diagnosis. Also do not forget to mention that your pain symptoms were relieved by taking amoxiclav which indicates that you had some sort of dental infection. Hope this answer is helpful. Please do not hesitate to ask if you have any further questions. Best regards,