| NHA | National Health Association; National Hearing Association; National Hemophilia Association; nonspeci... |
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| NPF | nasopharyngeal fiberscope; National Parkinson Foundation; National Pharmaceutical Foundation; Nation... |
| HII | Health Industries Institute; Health Insurance Institute; hemagglutination inhibitor immunoassay |
| IAM | Institute of Applied Microbiology [Japan]; Institute of Aviation Medicine; internal auditory meatus |
| ICR | [distance between] iliac crests; Institute for Cancer Research; Institute for Cancer Research [mouse... |
| NIHSS | National Institute of Health Stroke Scale |
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| NIMH | National Institute of Mental Health |
| NINDS | National Institute of Neurological Disorders and Stroke |
| NIOSH | National Institute of Occupational Safety and Health |
| NIST | National Institute of Standards and Technology |
| arthritis, rheumatoid | Autoimmune disease that is characterised by chronic inflammation of the joints and can cause inflammation of tissues in other areas of the body (such as the lungs, heart, and eyes). (12 Dec 1998) |
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| arthritis, spondylitis | A form of arthritis causing chronic inflammation of the spine. (12 Dec 1998) |
| atrophic arthritis | An obsolete term for arthritis without new bone formation, now usually called rheumatoid arthritis. (05 Mar 2000) |
| avian viral arthritis virus | A virus of the genus Reovirus, family Reoviridae, causing tenosynovitis and arthritis in chickens. (05 Mar 2000) |
| caprine arthritis-encephalomyelitis | A worldwide disease of goats caused by the caprine arthritis-encephalomyelitis virus; two syndromes are recognised, encephalomyelitis in kids and more commonly arthritis in adults. (05 Mar 2000) |
| caprine arthritis-encephalomyelitis virus | A lentivirus causing caprine arthritis-encephalomyelitis in goats. (05 Mar 2000) |
| paediatric arthritis | Arthritis is not just a problem for the retired. It can and does affect children in the form of paediatric arthritis. Also called juvenile arthritis. (12 Dec 1998) |
| reactive arthritis | Reiter's syndrome is also called reactive arthritis since it is thought to involve the immune system which is reacting to the presence of bacterial infections in the genital, urinary, or gastrointestinal systems. Accordingly, certain people's immune systems are genetically primed to react aberrantly when these areas are exposed to certain bacteria. The aberrant reaction of the immune system leads to inflammation in the joints and eyes. (12 Dec 1998) |
| gonococcal arthritis | Joint space infection in humans caused by disseminated Neisseria gonorrhoeae; characteristically monarticular, but may be polyarticular. Synonym: gonorrhoeal arthritis. (05 Mar 2000) |
| gonorrhoeal arthritis | Joint space infection in humans caused by disseminated Neisseria gonorrhoeae; characteristically monarticular, but may be polyarticular. Synonym: gonorrhoeal arthritis. (05 Mar 2000) |
| gout arthritis | <rheumatology> Recurrent acute arthritis of peripheral joints caused by the accumulation of monosodium urate crytals. Often presents as pain and swelling confined to one joint. The big toe joint is commonly affected. The arthritis occurs secondary to an inherited abnormality of purine metabolism, resulting in the deposition of uric acid crystals (sodium urate) within the joint space and articular cartilage. Usually due to overproduction of uric acid but may be a result of under excretion. The problems partly arise because neutrophils release lysosomal enzymes as a result of damage to the phagosome membrane by ingested crystals: colchicine acts to reduce the attack by inhibiting lysosome phagosome fusion. (18 Nov 1997) |
| gouty arthritis | An attack that is usually extremely painful of joint inflammation due to deposits of uric acid crystals in the joint fluid (synovial fluid) and joint lining (synovial lining). Intense joint inflammation occurs as white blood cells engulf the uric acid crystals, causing pain, heat, and redness of the joint tissues. The term gout commonly is used to refer to these painful arthritis attacks but gouty arthritis is only one manifeatation of gout. (12 Dec 1998) |
| rheumatoid arthritis | <rheumatology> Chronic inflammatory disease in which there is destruction of joints. Considered by some to be an autoimmune disorder in which immune complexes are formed in joints and excite an inflammatory response (complex mediated hypersensitivity). Cell-mediated (type IV) hypersensitivity also occurs and macrophages accumulate. This in turn leads to the destruction of the synovial lining (see pannus). (18 Nov 1997) |
| rheumatoid arthritis: joint manifestations | <radiology> Early signs: fusiform periarticular soft tissue swelling (result of effusion), regional osteoporosis (disuse and local hyperaemia), widened joint space, marginal and central bone erosion (base of 4th proximal phalanx most common), change in ulnar styloid and distal radioulnar joint, atlantoaxial dislocation, giant synovial cysts late signs: flexion/extension contractures with ulnar subluxation/dislocation, destruction/fusion of joints, elevation of humeral heads (tear/atrophy of rotator cuff), resorption of distal clavicle, erosion of superior margins of posterior portions of 3-5th ribs, destruction/narrowing of disc spaces, destruction of zygapophyseal joints without osteophyte formation, resorption of spinous process, protrusio acetabuli (from osteoporosis) (12 Dec 1998) |
| rheumatoid arthritis, systemic-onset juvenile | Also known as systemic-onset juvenile chronic arthritis. Still's disease presents with systemic (bodywide) illness including high intermittent fever, a salmon-coloured skin rash, swollen lymph glands, enlargement of the liver and spleen, and inflammation of the lungs (pleuritis) and around the heart (pericarditis). The arthritis may not be immediately apparent but it does appear and may persist after the systemic symptoms are gone. (12 Dec 1998) |