Osteoarthritis is a disease of the joints. Unlike many other forms of arthritis, such as rheumatoid arthritis and systemic lupus, osteoarthritis does not affect other organs of the body.The most common symptom of osteoarthritis is pain in the affected joints after repetitive use.Joint pain is usually worse later in the day.steoarthritis Overview. Osteoarthritis (OA) is caused by aging joints, injury, and obesity. OA symptoms include joint pain and stiffness. Treatment depends on the affected joint, including the hand, wrist, neck, back, knee, and hip, and involves medication and exercise.
Sleep deprivation (DEP-rih-VA-shun) is a condition that occurs if you don't get enough sleep. Sleep deficiency is a broader concept. It occurs if you have one or more of the following: 1  You don't get enough sleep (sleep deprivation). 2  You sleep at the wrong time of day (that is, you're out of sync with your body's natural clock). 3  You don't sleep well or get all of the different types of sleep that your body needs.
Sleep apnea is a potentially serious sleep disorder that occurs when a person's breathing is interrupted during sleep. People with untreated sleep apnea stop breathing repeatedly during their sleep. There are two types of sleep apnea: obstructive and central. Obstructive sleep apnea (OSA) is the more common of the two.leep disorders are conditions that prevent a person from getting restful sleep and, as a result, can cause daytime sleepiness and dysfunction. There are approximately eighty different types of sleep disorders. About 70 million Americans suffer from them. The most important sleep disorders are: