| HSAS | hydrocephalus due to stenosis of aqueduct of Sylvius; hypertrophic subaortic stenosis |
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| HSS | Hallermann-Streiff syndrome; Hallervorden-Spatz syndrome; Henoch-Schonlein syndrome; high-speed supe... |
| IHO | idiopathic hypertrophic osteo-arthropathy |
| IHSS | idiopathic hypertrophic subaortic stenosis |
| SHO | secondary hypertrophic osteoarthropathy; Senior House Officer |
| infantile progressive spinal muscular atrophy | Transmitted as autosomal recessive on chromosome 5q. Progressive dysfunction of the anterior horn cells in the spinal cord and brainstem cranial nerves with profound weakness and bulbar dysfunction occurring in the first two years of life. Three groups, based on age of clinical onset, are recognised. Synonym: familial spinal muscular atrophy, Hoffmann's muscular atrophy, infantile muscular atrophy, infantile progressive spinal muscular atrophy, progressive infantile spinal muscular atrophy, Werdnig-Hoffmann disease, Werdnig-Hoffmann muscular atrophy. (05 Mar 2000) |
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| ophthalmoplegia, chronic progressive external | One of the mitochondrial encephalomyopathies characterised by slowly progressive paralysis of the extraocular muscles. Muscle biopsies disclose the characteristic ragged red fibres and large numbers of mitochondria with deleted DNA. (12 Dec 1998) |
| ovine progressive pneumonia | A chronic, progressive, contagious interstitial pneumonitis of sheep in Europe and the U.S. Caused by a "slow virus" (family Lentiviridae); it is now believed that maedi and visna are two histopathological and clinical manifestations of the same viral infection. Synonym: ovine progressive pneumonia. Origin: Icelandic, dyspnea (05 Mar 2000) |
| traumatic progressive encephalopathy | A chronic progressive brain damage resulting from multiple brain injuries, e.g., dementia pugilistica. (05 Mar 2000) |
| essential progressive atrophy of iris | Progressive atrophy of the iris without inflammatory signs, characterised by patchy loss of all layers of the iris with hole formation, migration of the pupil, degeneration of the corneal endothelium, peripheral anterior synechiae, and secondary glaucoma; usually unilateral, predominantly affecting women in their middle years. (05 Mar 2000) |
| lenticular progressive degeneration | <gastroenterology, neurology> An inherited (autosomal recessive) disorder where there is excessive quantities of copper in the tissues, particularly the liver and central nervous system. Wilson's disease causes the body to absorb and retain copper. The copper deposits in the liver, brain, kidneys and eyes. Complications include dementia and liver failure. Symptoms include jaundice, vomiting, tremors, weakness and slow stiff movements. Blood tests show serum ceruloplasmin is low. Medications are given to remove the excess copper from the body. Even with life-long treatment, disabling (and life-threatening) side effects are common. Inheritance: autosomal recessive. (27 Sep 1997) |
| leukoencephalopathy, progressive multifocal | Rare demyelinating disease of the central nervous system which develops in immunocompromised patients secondary to lymphoproliferative disease, immunosuppressive therapy, autoimmune disorders, or aids. It is caused by the jc virus, a polyomavirus. (12 Dec 1998) |
| acute interstitial nephritis | <nephrology> A relatively uncommon condition which is characterised by inflammation of the renal tubules, glomeruli and surrounding tissue. Interstitial nephritis is usually be temporary and often associated with the use of a particular medication. Chronic and progressive forms do exist. Drugs that have been associated with interstitial nephritis include penicillins, ampicillin, sulpha drugs, non-steroidal anti-inflammatory agents, furosemide and thiazide diuretics. May result in mild kidney dysfunction or acute renal failure. Treatment may be with corticosteroids. Incidence: 1 in 25,000. (29 Dec 1997) |
| acute interstitial pneumonia | A severe and usually fatal form of pneumonia occurring primarily in infants usually considered a form of hypersensitivity pneumonitis. (05 Mar 2000) |
| acute interstitial pneumonitis | Usually considered a form of hypersensitivity pneumonitis. (05 Mar 2000) |
| apical interstitial lung disease | <radiology> A radiological diagnosis where fibrosis is seen in the apices (upper sections) of the lungs. Likely causes include: cystic fibrosis, ankylosing spondylitis, sarcoidosis, silicosis, eosinophlic granuloma, TB and fungus, particularly aspergillus infection. (25 Jun 1999) |
| basilar interstitial lung disease | <radiology> B bronchiectasis, A asbestosis, D drugs / DIP, L lymphangitic metastasis / LAM, A aspiration, S sarcoidosis, S scleroderma (12 Dec 1998) |
| chronic interstitial hepatitis | An obsolete term for cirrhosis of the liver. (05 Mar 2000) |
| chronic interstitial salpingitis | Salpingitis in which fibrosis or mononuclear cell infiltration involves all layers of the fallopian or eustachian tube. Synonym: pachysalpingitis. (05 Mar 2000) |
| pneumonia, atypical interstitial, of cattle | A cattle disease of uncertain cause, probably an allergic reaction. (12 Dec 1998) |