Tumors
Causes: Exact causes of tumors in the mouth, ear, jaw, head or neck are not known. But it is believed that excessive consumption of tobacco can lead to tumors in mouth. The tumor can be benign or malignant. Cancers of the larynx, pharynx, oral cavity, salivary glands, etc. (cancers of the head and neck) can also lead to ear pain while swallowing food or drinks.