| atopic | <dermatology> Pertaining to an atopen or to atopy, allergic. Origin: Gr. Topos = place (16 Dec 1997) |
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| atopic allergy | <immunology> An allergic reaction with strong family tendencies. (09 Oct 1997) |
| atopic asthma | Bronchial asthma due to atopy. (05 Mar 2000) |
| atopic cataract | A cataract associated with atopic dermatitis. (05 Mar 2000) |
| atopic dermatitis | <dermatology> A type of immune-mediated (allergic) inflammatory skin disorder that results in a itchy rash. See: atopic eczema. (27 Sep 1997) |
| atopic eczema | <dermatology> An inflammatory condition of the skin that includes redness, itching and oosing vesicular lesions which become scaly, crusted or hardened. Causes include hypersensitivity to chemicals, metals (nickel) or plants (for example Poison Ivy) or chronic irritation detergents or soaps. Anxiety, stress and depression may all play a role in the exacerbation of eczema. Those with atopic eczema may be discovered to have an increased eosinophil count in their blood. Treatment often includes mild anti-pruritic lotions and corticosteroid creams. Careful avoidance of any irritating substances will be mandatory. (27 Sep 1997) |
| atopic keratoconjunctivitis | A chronic papillary inflammation, of the conjunctiva showing Trantas dots in a patient with a history of hypersensitivity. (05 Mar 2000) |
| atopic reagin | One of the IgE class of antibody's first demonstrated by Prausnitz and Kustner by passive transfer to the skin. See: homocytotropic antibody. Synonym: atopic reagin. (05 Mar 2000) |
| dermatitis, atopic | A chronic inflammatory genetically determined disease of the skin marked by increased ability to form reagin (IgE), with increased susceptibility to allergic rhinitis and asthma, and hereditary disposition to a lowered threshold for pruritus. It is manifested by lichenification, excoriation, and crusting, mainly on the flexural surfaces of the elbow and knee. In infants it is known as infantile eczema. (12 Dec 1998) |
| aaa disease | Endemic anaemia of ancient Egypt, ascribed in the Papyrus Ebers to intestinal infestation with ancylostoma; now called ancylostomiasis. (05 Mar 2000) |
| ABO haemolytic disease of the newborn | Erythroblastosis foetalis due to maternal-foetal incompatibility with respect to an antigen of the ABO blood group; the foetus possesses A or B antigen which is lacking in the mother, and the mother produces immune antibody which causes haemolysis of foetal erythrocytes. (05 Mar 2000) |
| accumulation disease | A disease characterised by abnormal accumulation of a metabolic product in certain cells and tissues; examples include the mucopolysaccharidoses, lipoidoses. (05 Mar 2000) |
| Acosta's disease | A condition that results from prolonged exposure to high altitude. Symptoms include a continuous dry cough, shortness of breath, poor exercise tolerance, dizziness, headache, sleep difficulty, anorexia, confusion, fatigue and a rapid pulse. Treatment includes the immediate movement to a lower altitude. Prophylaxis has been accomplished successfully with the use of acetazolamide (Diamox). (27 Sep 1997) |
| acquired immunodeficiency disease | Acquired immunodeficiency disease: Disease caused by infection with the human immunodeficiency virus (HIV). (12 Dec 1998) |
| acute disease | Disease having a short and relatively severe course. (12 Dec 1998) |