What causes many small bumps protruding on the inner side of the lower lip?

Under normal circumstances, the presence of multiple small bumps on the inner surface of the lower lip may be caused by normal oral mucosal structures, normal labial glands, allergic reactions, oral ulcers, or oral herpes. If discomfort occurs, it is recommended to seek medical attention promptly. Specific analyses are as follows:

1. Normal oral mucosal structures

The small bumps on the inner surface of the lower lip may represent normal oral mucosal structures, such as minor salivary glands or mucous glands, which secrete saliva and mucus to maintain oral moisture. No special treatment is required; regular oral hygiene practices are sufficient.

2. Normal labial glands

The lips contain numerous labial glands, a type of salivary gland. In some individuals, these glands may be more prominent, appearing as multiple small bumps on the inner lower lip. This condition typically causes no other discomfort and requires no special intervention—maintaining good oral hygiene is adequate.

3. Allergic reaction

If an individual is allergic to certain foods or medications, small rashes may develop on the inner lip, presenting as raised bumps accompanied by local itching, redness, and swelling. It is recommended to treat under medical supervision with medications such as levocetirizine hydrochloride tablets, mizolastine sustained-release tablets, or setastine hydrochloride tablets.

4. Oral ulcers

Long-term consumption of spicy foods may trigger oral ulcers, leading to the appearance of multiple raised bumps on the inner lower lip. This is often accompanied by symptoms such as dry mouth and decreased appetite. Treatment under medical guidance may include oral ulcer powder, Bingbor powder, or ibuprofen tablets.

5. Oral herpes

Oral herpes is caused by the herpes simplex virus and may result in multiple raised bumps on the inner lower lip, along with systemic symptoms such as fever and fatigue. Antiviral treatment should be administered according to medical advice, using medications such as oseltamivir phosphate capsules, antiviral oral solution, or acyclovir tablets.

Daily attention to oral hygiene—including regular rinsing and brushing—is beneficial for preventing the occurrence of these conditions.