Neck sweating can occur in diabetic patients, which can have the following reasons: hypoglycemia, combined autonomic neuropathy, etc. 1. Hypoglycemia: If diabetic patients use insulin improperly in hypoglycemic treatment, drink alcohol on an empty stomach, or exercise excessively, they are prone to hypoglycemia, which causes sympathetic nerve excitation and produces hunger, as well as panic, sweating and other uncomfortable symptoms. Therefore, diabetic patients can have neck sweating. 2. Autonomic neuropathy: If diabetic patients have a long history of the disease, it can also lead to autonomic neuropathy and abnormal secretion of sweat. Patients tend to sweat from the waist up, but not from the legs. Therefore, when diabetes is combined with autonomic neuropathy, neck sweating can occur. In conclusion, diabetic patients can experience neck sweating and it is recommended that they be examined and treated under the guidance of a medical professional.