What does it mean if there's a small numb area on the lip?

A small area of numbness in the lips may be caused by factors such as contact cheilitis, facial neuritis, or stroke.

1. Contact cheilitis: This occurs when the lips come into direct contact with irritants or allergens. In addition to lip numbness, symptoms may include loss of taste, burning sensation, and pain. Under a doctor's guidance, treatment may involve cold or warm compresses, or topical application of petroleum jelly or mupirocin ointment.

2. Facial neuritis: The facial nerve controls muscles in the head, face, and lips. When the facial nerve becomes inflamed or exposed to cold, blood vessels in the face may constrict, leading to partial numbness in the lips. Treatment under medical supervision may include acupuncture or medications such as mecobalamin tablets and vitamin B12 tablets.

3. Stroke: During a stroke, some individuals may experience lip numbness, facial paralysis, or even drooping of the mouth. Prompt medical attention is recommended. Under a physician’s guidance, treatment should focus on managing the underlying condition, performing rehabilitation exercises, or using medications such as Shuxuening injection or gastrodin tablets to relieve symptoms.