Burning mouth syndrome (BMS) is a condition characterized by burning sensation of the mucus membrane lining the mouth. The burning sensation typically affects the tongue, and sometimes extends to the lips. Individuals with burning mouth syndrome type III have sporadic (random) symptoms throughout the day, but not even necessarily every day. While the cause is unknown, some believe BMS type III is caused by food allergies. This condition is more common in women than men, and very rarely affects children under the age of three. Type III BMS can be diagnosed by physical exams, mouth biopsies, or by examining bacterial or fungal cultures from the mouth. Treatment varies on a case-by-case basis, and may include: cognitive therapy, laser therapy, acupuncture, and treatment for underlying causes of BMS.