Sleeping problem, also known as sleep apnea, is a condition in which a person's breathing is interrupted during sleep. It is characterized by pauses in breathing or shallow breaths that can last from a few seconds to minutes. Apnea is the medical term for these pauses in breathing. Sleep apnea can cause a variety of symptoms, including daytime fatigue, snoring, and difficulty concentrating. Treatment options include lifestyle changes, such as weight loss and avoiding alcohol and smoking, as well as the use of CPAP machines and other devices.