Suspension of breathing, also known as apnea, is a temporary pause in breathing. It can occur during sleep or while awake and can last from a few seconds to minutes. Apnea can be caused by a variety of factors, including sleep apnea, obesity, and certain medications. It can also be a sign of an underlying medical condition such as heart disease or stroke. Treatment for apnea depends on the cause and can include lifestyle changes, medications, or surgery.