| NIA | National Institute on Aging; nephelometric inhibition assay; niacin; no information available; Nutri... |
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| AHA | acetohydroxamic acid; acquired hemolytic anemia; acute hemolytic anemia; American Heart Association;... |
| INRIA | National Institute for Research in Computers and Automation [France] [Institut National de la Recher... |
| NII | National Information Infrastructure; National Insurance Institute |
| NCA | National Certification Agency; National Council on Aging; National Council on Alcoholism; neurocircu... |
| NIAID | National Institute of Allergy and Infectious Disease |
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| NICHD | National Institute of Child Health and Human Development |
| NIDR | National Institute of Dental Research |
| NIDA | National Institute of Drug Abuse |
| NIEHS | National Institute of Environmental Health Sciences |
| arthritis deformans | A systemic disease, seen more commonly in women which affects connective tissue, particularly the synovial tissue within joints. Arthritis is the main clinical feature and involves many joints in the body, especially those of the hand and feet. In this disease, there is thickening of the soft tissues around the joints and extension of the synovial tissue over articular cartilage (which becomes eroded). A chronic and progressive course is common with joint deformities and disability. Juvenile rheumatoid arthritis is a variant which affects children. (27 Sep 1997) |
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| arthritis, degenerative | A type of arthritis caused by inflammation, breakdown, and eventual loss of the cartilage of the joints. Also called osteoarthritis. (12 Dec 1998) |
| arthritis-encephalitis virus, caprine | A species of lentivirus, subgenus ovine-caprine lentiviruses (lentiviruses, ovine-caprine), closely related to visna-maedi virus and causing acute encephalomyelitis, chronic arthritis, pneumonia, mastitis, and glomerulonephritis in goats. It is transmitted mainly in the colostrum and milk. (12 Dec 1998) |
| arthritis, gout | Joint inflammation caused by uric acid crystal deposits in the joint space An attack is usually extremely painful.The uric acid crystals are deposited 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) |
| arthritis, gouty | Arthritis, especially of the great toe, as a result of gout. Acute gouty arthritis often is precipitated by trauma, infection, surgery, etc. The initial attacks are usually monoarticular but later attacks are often polyarticular. (12 Dec 1998) |
| arthritis in children | Arthritis is not just a problem for the retired. It can and does affect children in the form of juvenile/paediatric arthritis. (12 Dec 1998) |
| arthritis, infectious | Arthritis caused by bacteria, rickettsiae, mycoplasmas, viruses, fungi, or parasites. Bacterial arthritis is frequently caused by staphylococcus aureus, streptococcus pneumoniae, haemophilus influenzae, and neisseria gonorrhoeae. Viral arthritis is less common than bacterial arthritis and may be a manifestation of such viral diseases as mumps, rubella, hepatitis, etc. (12 Dec 1998) |
| arthritis, juvenile rheumatoid | Rheumatoid arthritis of children occurring in three major subtypes defined by the symptoms present during the first six months following onset: systemic-onset (still's disease, juvenile-onset) polyarticular-onset, and pauciarticular-onset. Adult-onset cases of still's disease (still's disease, adult-onset) are also known. Only one subtype of juvenile rheumatoid arthritis (polyarticular-onset, rheumatoid factor-positive) clinically resembles adult rheumatoid arthritis and is considered its childhood equivalent. (12 Dec 1998) |
| arthritis, lyme | Inflammation of the joints associated with Lyme disease, a bacterial disease spread by ticks. (12 Dec 1998) |
| arthritis mutilans | A form of chronic rheumatoid arthritis in which osteolysis occurs with extensive destruction of the joint cartilages and bony surfaces with pronounced deformities, chiefly of the hands and feet; similar changes can occur in some cases of psoriatic arthritis. (05 Mar 2000) |
| arthritis nodosa | <disease> A systemic disease, seen more commonly in women which affects connective tissue, particularly the synovial tissue within joints. Arthritis is the main clinical feature and involves many joints in the body, especially those of the hand and feet. In this disease, there is thickening of the soft tissues around the joints and extension of the synovial tissue over articular cartilage (which becomes eroded). A chronic and progressive course is common with joint deformities and disability. Juvenile rheumatoid arthritis is a variant which affects children. (11 Nov 1997) |
| arthritis, psoriatic | Joint inflammation associated with psoriasis. (12 Dec 1998) |
| arthritis, quackery | Like many people with chronic ailments, sufferers from arthritis are potentially vulnerable to proponents of cure-all treatments which are promoted as having great benefits, but in reality have no right to such claims. (12 Dec 1998) |
| arthritis, reactive | An abacterial form of arthritis developing after infection at a site distant from the affected joint or joints. The causative bacteria cannot be cultured from synovial specimens but bacterial antigens have been demonstrated in cells from the synovial fluid and membrane. It often follows yersinia infection. (12 Dec 1998) |
| arthritis, reiter's | The combination of inflammation of the joints (arthritis), eyes (conjunctivitis), and GU (genitourinary) &/or GI (gastrointestinal) systems. (12 Dec 1998) |