The common causes of painful tongue bumps include: inflammation of the tongue papilla, tongue tumor, traumatic factors, and herpes of the tongue mucosa. 1. Inflammation of tongue papillae: for example, filiform papillitis, bacterial papillitis, follicular papillitis, etc., which leads to a large number of bacterial growth and reproduction in the tongue mucosa, thus causing reactive hyperplasia of the tongue mucosa, resulting in the appearance of small bumps, and when the inflammation touches the nerves of the tongue, it will result in the phenomenon of pain. 2. Tumor of tongue: with the rapid development of tumor, it will cause the symptoms of small bumps on the tongue, even ulceration, and when it presses the peripheral nerves, it will cause pain. 3. Traumatic factors: for example, there are sharp or too hot food in the mouth, which stimulate the surface of the tongue, thus causing pain and bumps on the surface of the tongue. 4. Herpes on the mucous membrane of the tongue: caused by herpes virus infection, which can be manifested as small bumps and small protrusions on the mucous membrane of the tongue, accompanied by obvious pain symptoms. As you can see, when the symptoms of long and painful tongue bumps appear, it is recommended to go to the regular hospital in time to see the doctor, symptomatic treatment.