Excessive Daytime Sleepiness
Excessive sleepiness is not a disorder in itself—it is a serious symptom that can have many different causes. If you feel excessively sleepy, you and your doctor should investigate it further. The common causes are poor sleep habits, such as a reduced opportunity for sleep or irregular sleep schedule, a sleep disorder like obstructive sleep apnea, side effects from certain medications, and other underlying medical conditions. Once you and your doctor have determined the cause of excessive sleepiness, you can create a treatment plan together.