<s>[INST] I am diabetic but lately I get so sleepy in the early afternoon. It has been getting worst over the last 5 years I can barely stay awake. I am also on a CPAP machine and still get 7 to 8 hours of sleep a night. Could this be something else causing this? [/INST] Hello, Diabetes may not cause daytime sleepiness. It may be due to insomnia or narcolepsy or obstructive sleep apnea or anxiety. Sleep apnea may also cause daytime sleepiness. Use a CPAP machine, use oxygen supplementation. Using the tablet Modalert may useful. If symptoms not improved please consult your physician he will examine and treat you accordingly. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Penchila Prasad Kandikattu, Internal Medicine Specialist </s>