What Causes Excessive Sweating?

 Diabetes

Heathline details three ways in which people with diabetes may experience excess sweating: one in response to low blood sugar, one in relation to food, and one solely occurring at night. The first is such an established symptom that diabetics are warned to check for sweat as a marker that their blood sugar has started to fall to unacceptable levels; the nervous system's trigger for sweating is signaled by low blood sugar levels. The second is rarer, and is called "gustatory sweating" because of its exclusive relationship with food; it's associated with serious diabetics who may have suffered nerve damage, happens exclusively around food, and is confined to the head and neck.