| t-lymphocytopenia, idiopathic CD4-positive | Reproducible depletion of CD4+ lymphocytes below 300 per cubic millimeter in the absence of HIV infection or other known causes of immunodeficiency. This is a rare, heterogeneous syndrome and does not appear to be caused by a transmissible agent. (12 Dec 1998) |
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| jaundice, chronic idiopathic | A familial chronic form of nonhemolytic jaundice thought to be due to a defect in the excretion of conjugated bilirubin and certain other organic anions (e.g., sulfobromophthalein) by the liver. It is characterised by the presence of a brown, coarsely granular pigment in the hepatic cells, which is pathognomonic of the condition. (12 Dec 1998) |
| Leber's idiopathic stellate neuroretinitis | A unilateral neuroretinitis with perifoveal exudates in Henle's nerve fibre layer producing a macular star and spontaneous regression in a few months. Synonym: Leber's idiopathic stellate neuroretinitis. (05 Mar 2000) |
| Leber's idiopathic stellate retinopathy | An inflammation affecting the optic nerve head and the posterior pole of the retina, with cells in the nearby vitreous, usually producing a macular star. Synonym: papilloretinitis. (05 Mar 2000) |