Lip numbness may be caused by low blood calcium, exposure to cold temperatures, Raynaud’s disease, food allergies, toxic chemical exposure, Lyme disease, reactions to some medications or even cancer, according to HealthG... More »

The causes of numbness in the lips include subjection of the lips to cold temperatures, certain medications, allergic reactions to foods and Raynaud’s phenomenon, explains Healthgrades. Tetany, which refers to contractio... More »

Some reasons for occasional numbness of the lips and tongue include medication side effects, food allergies, cold temperatures, low calcium levels and lack of blood flow to the area, notes Healthgrades. In rare cases, an... More »

Lip burning can originate from nerve damage, exposure to cold temperatures, dry skin, chemical burns, sunburn, lip injury, thermal burns, diabetes and stroke, according to Healthgrades. Lip burning accompanied by severe ... More »

Sudden swelling of the lips is a common symptom of angioedema, an allergic reaction that is believed to be triggered by eating shellfish, exposure to animal dander and ingestion of certain medications, according to Medli... More »

Lip discoloration is the change of a person’s natural lip color to a lightened or darkened shade. The most common discoloration tones are brown and gray; however, the lips can also turn to a blue or yellow tone, says Hea... More » Health Pain & Symptoms

Lip discoloration is caused by a number of factors including anemia, cyanosis, melasma, too much sun exposure, consumption of excessively hot food, high intake of caffeine, licking and biting of lips, vitamin B deficienc... More » Health Pain & Symptoms