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.
deprivation noun [C or U]. C2 a âsituation in which you do not have things or âconditions that are usually âconsidered ânecessary for a âpleasant âlife: They used âsleep deprivation as a âform of âtorture. There is âawful deprivation in the âshanty âtowns.