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Rhamnus
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D031955 |
[A plant genus of the family RHAMNACEAE. This genus is often called buckthorn but should not be confused with HIPPOPHAE or KARWINSKIA. Some RHAMNUS species have been reclassified into this genus. F. purshiana bark is cascara sagrada. Members contain frangulanin, frangulin, and anthraquinones such as EMODIN.
, Dried aged bark of a buckthorn, Rhamnus purshiana, that contains the anthraquinone EMODIN and cascarosides. It is used as a laxative (CATHARTICS).
] |
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Rheiformes
|
D020311 |
[Genus in the family Rheidae, order RHEIFORMES, comprised of a single species, Rhea americana.
, An order of large, long-necked, long-legged, flightless birds, found in South America. Known as rheas, they are sometimes called American ostriches, though they are in a separate order from true OSTRICHES.
] |
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Rhenium
|
D012211 |
[A metal, atomic number 75, atomic weight 186.207, symbol Re.
] |
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Rheology
|
D012212 |
[The study of the deformation and flow of matter, usually liquids or fluids, and of the plastic flow of solids. The concept covers consistency, dilatancy, liquefaction, resistance to flow, shearing, thixotrophy, and VISCOSITY.
] |
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Rheum
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D012250 |
[A plant genus of the family POLYGONACEAE. Members contain chrysophanic acid, rhein, EMODIN, and other ANTHRAQUINONES. The roots were formerly used as PURGATIVES.
] |
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Rheumatic Diseases
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D012216 |
[Disorders of connective tissue, especially the joints and related structures, characterized by inflammation, degeneration, or metabolic derangement.
] |
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Rheumatic Fever
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D012213 |
[A febrile disease occurring as a delayed sequela of infections with STREPTOCOCCUS PYOGENES. It is characterized by multiple focal inflammatory lesions of the connective tissue structures, such as the heart, blood vessels, and joints (POLYARTHRITIS) and brain, and by the presence of ASCHOFF BODIES in the myocardium and skin.
] |
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Rheumatic Heart Disease
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D012214 |
[Cardiac manifestation of systemic rheumatological conditions, such as RHEUMATIC FEVER. Rheumatic heart disease can involve any part the heart, most often the HEART VALVES and the ENDOCARDIUM.
] |
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Rheumatic Nodule
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D012215 |
[A small round or oval, mostly subcutaneous nodule made up chiefly of a mass of Aschoff bodies and seen in cases of rheumatic fever. It is differentiated from the RHEUMATOID NODULE which appears in rheumatoid arthritis, most frequently over bony prominences. (From Dorland, 27th ed)
] |
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Rheumatoid Factor
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D012217 |
[Antibodies found in adult RHEUMATOID ARTHRITIS patients that are directed against GAMMA-CHAIN IMMUNOGLOBULINS.
] |
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Rheumatoid Nodule
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D012218 |
[Subcutaneous nodules seen in 20-30% of rheumatoid arthritis patients. They may arise anywhere on the body, but are most frequently found over the bony prominences. The nodules are characterized histologically by dense areas of fibrinoid necrosis with basophilic streaks and granules, surrounded by a palisade of cells, mainly fibroblasts and histiocytes.
] |
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Rheumatoid Vasculitis
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D056653 |
[Necrotizing VASCULITIS of small and medium size vessels, developing as a complication in RHEUMATOID ARTHRITIS patients. It is characterized by peripheral vascular lesions, cutaneous ULCERS, peripheral GANGRENE, and MONONEURITIS MULTIPLEX.
] |
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Rheumatologists
|
D000072140 |
[Physicians who specialize in treating RHEUMATIC DISEASES.
] |
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Rheumatology
|
D012219 |
[A subspecialty of internal medicine concerned with the study of inflammatory or degenerative processes and metabolic derangement of connective tissue structures which pertain to a variety of musculoskeletal disorders, such as arthritis.
] |
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Rhinitis
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D012220 |
[Inflammation of the NASAL MUCOSA, the mucous membrane lining the NASAL CAVITIES.
] |
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Rhinitis, Allergic
|
D065631 |
[An inflammation of the NASAL MUCOSA triggered by ALLERGENS.
] |
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Rhinitis, Allergic, Perennial
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D012221 |
[Inflammation of the mucous membrane of the nose similar to that found in hay fever except that symptoms persist throughout the year. The causes are usually air-borne allergens, particularly dusts, feathers, molds, animal fur, etc.
] |
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Rhinitis, Allergic, Seasonal
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D006255 |
[Allergic rhinitis that occurs at the same time every year. It is characterized by acute CONJUNCTIVITIS with lacrimation and ITCHING, and regarded as an allergic condition triggered by specific ALLERGENS.
] |
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Rhinitis, Atrophic
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D012222 |
[A chronic inflammation in which the NASAL MUCOSA gradually changes from a functional to a non-functional lining without mucociliary clearance. It is often accompanied by degradation of the bony TURBINATES, and the foul-smelling mucus which forms a greenish crust (ozena).
] |
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Rhinitis, Vasomotor
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D012223 |
[A form of non-allergic rhinitis that is characterized by nasal congestion and posterior pharyngeal drainage.
] |
