| LOA | leave of absence; Leber optic atrophy; left occipitoanterior [fetal position] |
|---|---|
| MSA | major serologic antigen; male-specific antigen; mannitol salt agar; Medical Services Administration;... |
| NMA | National Malaria Association; National Medical Association; neurogenic muscular atrophy; N-nitroso-N... |
| OA | obstructive apnea; occipital artery; occipito-anterior; occiput anterior; octanoic acid; ocular albi... |
| OAK | Kjer optic atrophy |
| acute demyelinating polyneuropathy | <neurology> A neurologic condition. Synonym: Guillain-Barre syndrome. Origin: Gr. Pathos = disease (27 Sep 1997) |
|---|---|
| acute disease | Disease having a short and relatively severe course. (12 Dec 1998) |
| acute disseminated encephalomyelitis | <radiology> Immune-mediated encephalitis (IME), ADE, allergic treatmentn to prior infection, begins 1-2 weeks after event, occus after viral infection or vaccination, affects corpus callosum and white matter (above and below tent), self-limited; steroids may help See also: white-matter disease, demyelinating disease (12 Dec 1998) |
| acute disseminated myositis | The occurrence of multiple foci of acute inflammation in the muscular tissue and overlying skin in various parts of the body, accompanied by fever and other signs of systemic infection. See: dermatomyositis. Synonym: acute disseminated myositis, pseudotrichinosis, pseudotrichiniasis. (05 Mar 2000) |
| acute epidemic conjunctivitis | An obsolete term for an acute conjunctivitis marked by intense hyperaemia and profuse mucopurulent discharge. Synonym: acute epidemic conjunctivitis, pinkeye. (05 Mar 2000) |
| acute epidemic leukoencephalitis | A disease characterised by acute onset of fever, followed by convulsions, delirium, and coma, and associated with perivascular demyelination and haemorrhagic foci in the central nervous system. Synonym: acute primary haemorrhagic meningoencephalitis, Strumpell's disease. (05 Mar 2000) |
| acute extrinsic allergic alveolitis | <radiology> No chest X-ray findings in 30-95%, diffuse acinar consolidative pattern (oedema and exudative filling of alveoli), basilar distribution, lymph node enlargement (unusual, more common with recurrence) see: extrinsic allergic alveolitis (12 Dec 1998) |
| acute febrile illness | An illness of sudden onset that manifests with fever. (27 Sep 1997) |
| acute febrile neutrophilic dermatosis | A rare dermatosis, predominant in women, of rapid onset and characterised by plaque-like lesions, usually multiple, on the face, neck, and upper extremities, accompanied by conjunctivitis, mucosal lesions, fever, malaise, arthralgia, and peripheral blood neutrophilia in many cases; biopsy reveals polymorphonuclear infiltrate of the dermis; rapid remission occurs with systemic steroid therapy. Synonym: Sweet's disease. (05 Mar 2000) |
| acute fibrinous pericarditis | The usual lesion of acute pericarditis in which inflammation produces large quantities of fibrin. (05 Mar 2000) |
| acute follicular conjunctivitis | An obsolete term for acute viral conjunctivitis. (05 Mar 2000) |
| acute fulminating meningococcaemia | Rapidly moving systemic infection with Neisseria meningitidis, usually without meningitis, characterised by rash, usually petechial or purpuric, high fever, and hypotension. May lead to death within hours. (05 Mar 2000) |
| acute fulminating meningococcal septicaemia | <radiology> Septicaemia (e.g., meningococcaemia), haemorrhagic necrosis of adrenals due to, septic emboli, disseminated intravascular coagulopathy (DIC), most likely to be adrenal haemorrhage and/or calcification (12 Dec 1998) |
| acute glaucoma | <ophthalmology> A sudden blockage of the normal fluid circulation within the eyeball resulting in increased intraocular pressure. Increased pressure within the eyeball can cause damage to the optic nerve and blindness. Symptom include severe eye or facial pain, nausea, vomiting, decreased vision, blurred vision and seeing halos around objects. The eye appears red with a steamy cornea and a fixed (nonreactive) dilated pupil. Treatment is emergent with medications to lower the pressure within the eye. (27 Sep 1997) |
| acute glomerulonephritis | <nephrology> A disease of the kidneys that results in inflammation of the glomerulus (the portion of the kidney that filters the blood). Conditions which may cause glomerulonephritis include post-streptococcal disease (strep throat), lupus, syphilis, bacterial endocarditis, membranoproliferative glomerulonephritis, sepsis, vasculitis, Goodpasture's syndrome, typhoid fever, Henoch-Schonlein purpura, hepatitis or a viral infection (for example mumps, measles, mononucleosis). (27 Sep 1997) |