| chronic bacillary diarrhoea | Prolonged diarrhoea occurring in association with bacterial infection, usually occurring in patients with gastrointestinal stasis, allowing bacterial proliferation in the intestine with secondary malabsorption. Occurs in blind-loop syndrome after intestinal surgery, following vagotomy, and occasionally in scleroderma or diabetes. (05 Mar 2000) |
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| chronic bronchitis | A condition of the bronchial tree characterised by cough, hypersecretion of mucus, and expectoration of sputum over a long period of time, associated with frequent bronchial infection; usually due to inhalation, over a prolonged period, of air contaminated by dust or by noxious gases of combustion. (05 Mar 2000) |
| chronic bullous dermatosis of childhood | A rare self-limiting bullous disease, chiefly of the trunk, perioral, and pelvic areas, with onset in the first decade, successively less severe recurrences, and total remission at adolescence; linear epidermal basement membrane zone deposit of IgA is found in involved and in normal skin. Synonym: linear IgA bullous disease in children. (05 Mar 2000) |
| chronic cholecystitis | <radiology> most common form of gallbladder inflammation, gallstones, gallbladder wall thickening, small gallbladder hepatobiliary scan: normal gall bladder visualization in most patients, delayed gall bladder visualization; visualization of bowel before gall bladder (sensitivity 45%, specificity 90%), noncontractility/decreased response after CCK (12 Dec 1998) |
| chronic cicatrizing enteritis | A subacute chronic enteritis, of unknown cause, involving the terminal ileum and less frequently other parts of the gastrointestinal tract; characterised by patchy deep ulcers that may cause fistulas, and narrowing and thickening of the bowel by fibrosis and lymphocytic infiltration, with noncaseating tuberculoid granulomas that also may be found in regional lymph nodes; symptoms include fever, diarrhoea, cramping abdominal pain, and weight loss. Synonym: chronic cicatrizing enteritis, Crohn's disease, distal ileitis, regional ileitis, terminal ileitis, granulomatous enteritis. (05 Mar 2000) |
| chronic conjunctivitis | A persistent, bilateral, conjunctival hyperaemia with scanty exudation; there is a tendency toward remission and exacerbation. (05 Mar 2000) |
| chronic constrictive pericarditis | Tuberculous or other infection of the pericardium, with thickening of the membrane and constriction of the cardiac chambers. (05 Mar 2000) |
| chronic cutaneous leishmaniasis | A form of Old World cutaneous leishmaniasis, usually with a prolonged incubation period and confined to urban areas. Synonym: chronic cutaneous leishmaniasis, dry cutaneous leishmaniasis, urban cutaneous leishmaniasis. (05 Mar 2000) |
| chronic cystic mastitis | Older term corresponding to fibrocystic condition of the breast. (05 Mar 2000) |
| chronic desquamative gingivitis | A clinical term for a gingival condition of unknown aetiology, usually encountered in middle-aged and older women, characterised by erythema, mucosal atrophy, and desquamation, and usually accompanied by a burning sensation and pain; diagnosis is usually made by biopsy and direct immunofluorescence. Synonym: gingivosis. (05 Mar 2000) |
| chronic diffuse sclerosing osteomyelitis | A proliferative reaction of bone to a low-grade infection of the jaws; most often seen in middle-aged or older black women as extensive, often bilateral radio-opacities of the mandible and maxilla. (05 Mar 2000) |
| chronic discoid lupus erythematosus | A form of lupus erythematosus in which cutaneous lesions are present; these commonly appear on the face and are atrophic plaques with erythema, hyperkeratosis, follicular plugging, and telangiectasia; in some instances systemic lupus erythematosis may develop. Synonym: chronic discoid lupus erythematosus. (05 Mar 2000) |
| chronic disease | Diseases which have one or more of the following characteristics: they are permanent, leave residual disability, are caused by nonreversible pathological alteration, require special training of the patient for rehabilitation, or may be expected to require a long period of supervision, observation, or care. (12 Dec 1998) |
| chronic dysentery of cattle | A disease occurring in cattle and sheep, usually manifested by thickening of the wall of the intestine, particularly of the ileum; caused by infection with Mycobacterium paratuberculosis. Synonym: chronic dysentery of cattle, paratuberculosis. (05 Mar 2000) |
| chronic eczema | Thickening of skin with accentuated skin lines in eczema. Synonym: chronic eczema, eczema hypertrophicum. (05 Mar 2000) |