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 »

One can experience numb lips for a number of reasons, such as exposure to cold temperatures or as a result of a mild allergic reaction, according to Heathgrades. Some prescription medicines may also cause numbness in the... More »

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Causes of numb lips include allergic reactions, medication side effects and neuropathy, according to Healthgrades. Some people may experience numb lips after receiving an anesthetic at the dentist or as a response to col... More »

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Chemotherapy, pipe and cigarette smoking, chewing tobacco and trauma to the lips; in addition to malignancy, allergic reactions, ulcers, pathogens and different medications can cause white stuff on the lips, according to... More »

Causes of numb lips include allergic reactions, medication side effects and neuropathy, according to Healthgrades. Some people may experience numb lips after receiving an anesthetic at the dentist or as a response to col... More »

www.reference.com Health Pain & Symptoms

Some possible causes of numbness in the face are injuries, exposure to cold temperatures, neuropathy, multiple sclerosis and migraines, according to Healthgrades. Prolonged facial numbness is also associated with problem... 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 »