The causes of pain when the mouth is widely opened are usually keratitis, mumps and temporomandibular joint disorder syndrome.
1. Keratitis: Keratitis is characterized by ulceration, redness, swelling or pain in one or both corners of the mouth, which can cause pain when the mouth is opened widely and the corners of the mouth are involved.
2. Mumps: The parotid glands are located in the cheeks near the earlobes. If the parotid glands are infected with parotid viruses and mumps occurs, the parotid glands can be involved when the mouth is opened widely, which can lead to pain on both sides of the cheeks.
3. Temporomandibular Joint Disorder Syndrome (TMJDS): TMJDS is caused by disorders of the masticatory muscles, disorders of the joint structure, or osteoarthropathy, etc. When you open your mouth wide, you may experience pain and popping sounds at the temporomandibular joints.
If your mouth hurts when you open it wide, you should go to the hospital in time to find out the cause and actively cooperate with the professional doctor’s treatment.