Sweating from eating spicy foods is called gustatory sweating. When we eat spicy foods, nerves are triggered in the autonomic nervous system. The autonomic nervous system controls actions that occur without us having to think about them, such as our heartbeat and breathing. Gustatory sweating is usually limited to the face and neck. When eating spicy foods, sweat commonly forms on the upper lip and the nose. In some cases it can spread to the cheeks, forehead, and neck. This sweating is a result of a side effect of how our sweat glands work. Nerves connected to our salivary glands are also used by the body to trigger sweating. When we eat spicy foods, they activate the nerves and we start producing acetylcholine, the neurotransmitter that causes us to sweat. In a way, the sweating is a malfunction of the body. However, it can?t be considered a real malfunction because most everyone?s body works the same way.