| rhinitis nervosa | <chest medicine> An inflammatory response in the nasal passages to an allergic stimulus. Often includes: nasal congestion, sneezing, runny or itchy nose. (27 Sep 1997) |
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| rhinitis sicca | A form of chronic rhinitis with little or no secretion. (05 Mar 2000) |
| rhinitis, vasomotor | A form of rhinitis brought about by changes in vascular tone and permeability. The aetiology is obscure. (12 Dec 1998) |
| chronic rhinitis | A protracted sluggish inflammation of the nasal mucous membrane; in the later stages the mucous membrane with its glands may be thickened (hypertrophic rhinitis) or thinned (atrophic rhinitis). (05 Mar 2000) |
| scrofulous rhinitis | Tuberculous infection of the nasal mucous membrane. (05 Mar 2000) |
| hypertrophic rhinitis | Chronic rhinitis with permanent thickening of the mucous membrane. (05 Mar 2000) |
| necrotic rhinitis of pigs | An infection of the subcutaneous structures of the snout of swine which causes malformation of the face; it is frequently due to infection of wounds made for the insertion of metal rings to discourage or prevent the animal from rooting in the soil; Fusobacterium necrophorum plays an important role in this disease. Synonym: bullnose. (05 Mar 2000) |
| inclusion body rhinitis | A respiratory disease of pigs caused by the cytomegalovirus porcine herpesvirus 2 and characterised by rhinitis and conjunctivitis in young pigs. (05 Mar 2000) |
| abdomen, acute | Clinical syndrome characterised by abdominal pain of great severity associated with other symptoms and signs, usually those of acute peritonitis, which might well be the result of a ruptured abdominal viscus or a similar abdominal catastrophe requiring urgent surgical operation. (12 Dec 1998) |
| acute | 1. Sharp, poignant. 2. Having a short and relatively severe course. Origin: L. Acutus = sharp (18 Nov 1997) |
| acute abdomen | Any serious acute intra-abdominal condition (such as appendicitis) attended by pain, tenderness, and muscular rigidity, and for which emergency surgery must be considered. Synonym: surgical abdomen. (05 Mar 2000) |
| acute abscess | A recently formed abscess with little or no fibrosis in the wall of the cavity. Synonym: hot abscess. (05 Mar 2000) |
| acute adrenal crisis | <endocrinology> An abrupt life-threatening state which is caused by insufficient production of cortisol by the adrenal gland. A typical finding in Addison's disease. Individuals who have been taking corticosteroids (glucocorticoids) for a prolonged period of time (weeks to months) are at risk for acute adrenal crisis if the medication is stopped abruptly. For this reason, corticosteroid medication are withdrawn slowly on a diminishing dosing schedule. Symptoms include low blood pressure (shock), weakness, headache, vomiting, fever chills, tachycardia and sweating. Treatment includes blood pressure support and intravenous hydrocortisone. (27 Sep 1997) |
| acute adrenocortical insufficiency | Severe adrenocortical insufficiency when an intercurrent illness or trauma causes an increased demand for adrenocortical hormones in a patient with adrenal insufficiency due to disease or use of relatively large amounts of similar hormones as therapy; characterised by nausea, vomiting, hypotension, and frequently hyperthemia, hyponatraemia, hyperkalaemia, and hypoglycaemia; can be fatal if untreated. Synonym: addisonian crisis, adrenal crisis, Bernard-Sergent syndrome. (05 Mar 2000) |
| acute African sleeping sickness | A disease of humans caused by Trypanosoma brucei rhodesiense in eastern Africa from Ethiopia and Uganda south to Zimbabwe; it is clinically similar to Gambian trypanosomiasis but of shorter duration and more acute in form; patients suffer repeated episodes of pyrexia, become anaemic, and die commonly from cardiac failure. Synonym: acute African sleeping sickness, acute trypanosomiasis, East African sleeping sickness, East African trypanosomiasis. (05 Mar 2000) |