| IHP | idiopathic hypoparathyroidism; idiopathic hypopituitarism; individualized health plan; inositol hexa... |
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| IIP | idiopathic interstitial pneumonia; idiopathic intestinal pseudo-obstruction; increased intracranial ... |
| ILS | idiopathic leucine sensitivity; idiopathic lymphadenopathy syndrome; increase in life span; infrared... |
| IPD | idiopathic Parkinson disease; idiopathic protracted diarrhea; immediate pigment darkening; increase ... |
| IPS | idiopathic pain syndrome; idiopathic postprandial syndrome; inches per second; infundibular pulmonar... |
| idiopathic hyperlipaemia | Hyperlipoproteinaemia characterised by the presence of large amounts of chylomicrons and triglycerides in the plasma when the patient has a normal diet, and their disappearance on a fat-free diet; low alpha-and beta-lipoproteins on a normal diet, with increase on fat-free diet; decreased plasma postheparin lipolytic activity; and low tissue lipoprotein lipase activity. It is accompanied by bouts of abdominal pain, hepatosplenomegaly, pancreatitis, and eruptive xanthomas; autosomal recessive inheritance. See: familial lipoprotein lipase inhibitor. Synonym: Burger-Grutz syndrome, familial fat-induced hyperlipaemia, familial hyperchylomicronaemia, familial hypertriglyceridemia, idiopathic hyperlipaemia. (05 Mar 2000) |
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| idiopathic hypertension | Hypertension without known cause. Synonym: idiopathic hypertension, primary hypertension. (05 Mar 2000) |
| idiopathic hypertrophic subaortic stenosis | <cardiology> A congenital heart disease that results in abnormal thickening of the ventricular septum and left ventricular wall. Enlargement of the ventricular septum can result in ventricular outflow obstruction (subaortic stenosis) and eventual cardiomyopathy. (27 Sep 1997) |
| idiopathic hypoparathyroidism | <radiology> Rare condition of unknown cause, round face; short dwarf-like; obese, mental retardation, cataracts, dry scaly skin; atrophy of nails, dental hypoplasia (delayed tooth eruption, impaction of teeth, supernumerary teeth) see: hypoparathyroidism (12 Dec 1998) |
| idiopathic infantilism | Dwarfism generally associated with hypogonadism; may be caused by deficient secretion of anterior pituitary hormones. Synonym: Lorain's disease, proportionate infantilism, universal infantilism. (05 Mar 2000) |
| idiopathic interstitial fibrosis | A progressive inflammatory condition starting with diffuse alveolar damage and resulting in fibrosis and honeycombing over a variable time period; also a common feature of collagen-vascular diseases. Synonym: fibrosing alveolitis, Hamman-Rich syndrome, idiopathic interstitial fibrosis. (05 Mar 2000) |
| idiopathic megacolon | An acquired megacolon, found in children and adults, without distal obstruction or absence of ganglion cells; the muscle of the dilated colon is thin. (05 Mar 2000) |
| idiopathic muscular atrophy | A form of progressive muscular atrophy in which the disease begins in the muscle and not in the spinal centres. Synonym: Erb atrophy, idiopathic muscular atrophy. (05 Mar 2000) |
| idiopathic myelofibrosis | A progressive disease of the bone marrow where neoplastic bone marrow stem cells lodge and grow in multiple sites outside the bone marrow. Typically, there is enlargement of the spleen and a gradual replacement of the bone marrow elements by fibrosis (scarring), progressive anaemia and variable changes in the number of white blood cells and platelets. Diagnosis is by bone marrow biopsy. There is no definitive treatment for this disorder that has been shown to affect life span favorably. (27 Sep 1997) |
| idiopathic neuralgia | <symptom> Nerve pain not due to any apparent cause. (05 Mar 2000) |
| idiopathic orthostatic hypotension | <clinical sign> The tendency for blood pressure to drop for unknown reasons on assuming upright posture. (05 Mar 2000) |
| idiopathic paroxysmal rhabdomyolysis | Excretion of myoglobin in the urine; results from muscle degeneration, which releases myoglobin into the blood; occurs in certain types of trauma (crush syndrome), advanced or protracted ischemia of muscle, or as a paroxysmal process of unknown aetiology. Synonym: idiopathic paroxysmal rhabdomyolysis, Meyer-Betz disease, Meyer-Betz syndrome. (05 Mar 2000) |
| idiopathic proctitis | Probably a variant of ulcerative colitis involving the rectum; some cases progress to involve the remainder of the colon as well. Synonym: chronic ulcerative proctitis. (05 Mar 2000) |
| idiopathic pulmonary fibrosis | <radiology> Aka: usual interstitial pneumonia (UIP), 5-6th decade; M:F = 1:1, clubbing of fingers (83%), lymphocytosis on lavage, increased occurence of bronchogenic CA, average survival of 4-6 years; 87% mortality CXR findings: occasional ground glass pattern in early stage of alveolitis, diffuse reticulations (60%) predominantly at bases, honeycombing, pleural effusion (4%); pleural thickening (6%), pneumothorax in 7% (late stage), progressive volume loss see: interstitial pulmonary fibrosis (12 Dec 1998) |
| idiopathic pulmonary haemosiderosis | <chest medicine> A rare, sporadic, fatal, mostly in children with an equal sex distribution. The condition also occurs in adults where there is a sex difference (M:F = 2:1). The patients present with recurrent attacks of pulmonary haemorrhage, acute phase: bat-wing alveolar infiltrates, clears rapidly, chronic findings: haemosiderosis, pulmonary fibrosis, cor pulmonale. (12 Dec 1998) |