Sleep disturbances occur in about 12% to 25% of the general population [1] and are often associated with situational stress, illness, aging, and drug treatment.[2,3] It is estimated that 45% of people with cancer have sleep disturbance.[4] Physical illness, pain, hospitalization, drugs, and other treatments for cancer, and the psychological impact of a malignant disease may disrupt the sleeping patterns of persons with cancer. Poor sleep adversely affects daytime mood and performance. In the gen...

Sleep apnea caused when respiratory control centers in the brain fail to activate breathing muscles.

Sleep Disorders as related to Central sleep apnea