Night sweats, or nocturnal hyperhidrosis, refer to excessive sweating during sleep. For many individuals, sweating at night can be a minor inconvenience. However, for people with diabetes, night sweats can sometimes be a sign of fluctuating blood sugar levels, which require immediate attention. If you have diabetes, you may have wondered, does diabetes cause night sweats? The short answer is yes. Both type 1 diabetes and type 2 diabetes can cause night sweats, though the causes and underlying mechanisms can differ between the two conditions.