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 »

Some causes of a tingling tongue and surrounding area are stroke, head injury and a reduction in blood flow, according to Healthgrades. Other causes are vitamin or mineral deficiencies, a nerve injury, or several disease... More »

As with all head and neck cancer, causes for tongue cancer are not expressly known. However, tobacco use, excessive consumption of alcohol, excessive sun exposure to the lips and the sexually transmitted disease known as... More » Health Conditions & Diseases Cancer

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 »

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 » Health Pain & Symptoms

Injuries, bleeding disorders, oral ulcers, food allergies, nutritional deficiencies or other health issues can cause blood blisters in the mouth, according to These painful blisters can appear... More »

There are multiple reasons a person's leg swells below the knee or in any area, notes Healthgrades. Mild swelling is very commonly caused by standing for long periods, while leg swelling that is chronic is often a sign o... More »