Sweating from hunger may be a normal physiological phenomenon, but it may also be caused by pathological factors, such as diabetes, insulinoma, cerebrovascular disease and so on. 1. Physiological factors: sweating when hungry is usually a typical hypoglycemic manifestation, for example, in extreme hunger, strenuous exercise, which can easily cause a drop in blood glucose, hypoglycemic reaction. This induces sweating when you are hungry and is accompanied by symptoms such as panic and fatigue, which can be relieved after eating or taking sugar cubes. 2. Pathological factors: when suffering from insulinoma, pancreatic β-cell tumor or β-cell hyperplasia, secretion of large amounts of insulin, causing episodes of hypoglycemia symptoms, symptoms of sweat when hungry; when suffering from diabetes mellitus, diabetic patients taking too much hypoglycemic drugs or food intake is insufficient, there will also be symptoms of hypoglycemia symptoms, symptoms of sweat when hungry. If the symptoms of hunger sweating are not relieved for a long time or frequent episodes, it is recommended to go to a regular hospital in a timely manner, under the guidance of a professional physician to improve the examination and give targeted treatment, so as to avoid delaying the condition.