A sleep study is a noninvasive test that electronically records activity in the brain and body during sleep. Learn about this procedure.
Sleep apnea is a condition that causes people to periodically stop breathing while they’re asleep. It is associated with many medical problems.
Insomnia is a medical condition in which insufficient sleep causes a significant decline in daytime performance and functioning. Learn about symptoms and treatment.
In this routine test, a physician slips a flexible device called a bronchoscope through your nose or mouth, down your throat and into your lungs.
Pulmonary edema is a condition in which fluid buildup in the lungs makes it hard to breathe.