Hook pain, also known as temporomandibular arthritis, is also called temporomandibular joint disorder syndrome. It is usually caused by structural damage to the temporomandibular joint, as well as changes or dysfunction of the surrounding ligaments and soft tissues, leading to temporomandibular joint movement disorders, pain and discomfort, which can be triggered by emotional factors, trauma factors, oral abnormalities, etc. 1. Emotional factors: If the patient is usually irritable, anxious, nervous, depressed, overexcited and insomnia, it is easy to trigger temporomandibular joint disorders, which in turn leads to hook pain; 2. Traumatic factors: If patients have acute trauma such as excessive mouth opening, external impact, sudden biting of hard objects, etc., which may easily lead to contusion, strain and dysfunction of the joint and surrounding soft tissues, hook pain may occur; 3. Oral abnormalities: If patients have misaligned eruption of wisdom teeth, heavy abrasion, early contact of tooth tips or severe tooth malformation, unilateral chewing, etc., they may also be implicated in causing hook pain. Patients with hook pain are advised to seek the help of dentists for physical therapy, medication, acupuncture, etc. in a timely manner.