One of the earliest indicators that a diabetic may be experiencing hypoglycemia in sleep is chronic night sweats, as well as waking up with painful headaches. For those whose night sweats and morning headaches do not self-resolve within a few days, it may be wise to try a quick test. Set your alarm for the middle of the night – say 2 a.m. for a person who’s in bed by 11 p.m. Test your glucose levels and record the measurement, go back to sleep and test again immediately upon waking in the morning. If you begin to notice abnormal nighttime fluctuations during this exercise, it may be wise to consult your health care provider.