| ALL | acute lymphoblastic leukemia; acute lymphocytic leukemia |
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| ALP | acute leukemia protocol; acute lupus pericarditis; alkaline phosphatase; alveolar proteinosis; anter... |
| APE | acetone powder extract; acute polioencephalitis; acute psychotic episode; airway pressure excursion;... |
| ARD | absolute reaction of degeneration; acute radiation disease; acute respiratory disease; adult respira... |
| ARN | acute renal necrosis; acute retinal necrosis; arcuate nucleus; Association of Rehabilitation Nurses |
| 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) |
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| 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) |
| acute goiter | A goiter that develops very rapidly. (05 Mar 2000) |
| acute granulocytic leukaemia | <haematology> A form of leukaemia which is characterised by the proliferation of immature white blood cells (granulocytes) in the bloodstream. Occurs primarily in adults and in infants under 1 year of age. Complications include abnormal bleeding and susceptibility to infections. Symptoms include fatigue, weight loss, fevers, weakness, pallor, bone pains, bleeding gums, nosebleeds, easy bruising, enlarged lymph nodes and joint pains. Treatment includes chemotherapy and/or bone marrow transplant. Origin: Gr. Haima = blood (27 Sep 1997) |
| acute haemorrhagic conjunctivitis | Specific acute endemic conjunctivitis with eyelid swelling, tearing, conjunctival haemorrhages, and follicles; usually caused by Enterovirus type 70. (05 Mar 2000) |
| acute haemorrhagic encephalitis | Encephalitis of apoplectoid character due to blood extravasation. Synonym: encephalitis haemorrhagica. (05 Mar 2000) |
| acute haemorrhagic 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) |
| acute haemorrhagic leukoencephalitis | A fulminating demyelinating disorder of the central nervous system that affects mainly children and young adults. Almost always preceded by a respiratory infection, characterised by the abrupt onset of fever, headache, confusion, and nuchal rigidity, soon followed by focal seizures, hemiplegia, or quadriplegia, brainstem findings, and coma; the CSF shows evidence of an inflammatory process; due to the massive destruction of the white matter of one or both hemispheres, often accompanied by similar destruction of the white matter of the brainstem and cerebellar peduncles; of unknown aetiology. Synonym: acute haemorrhagic leukoencephalitis, acute necrotizing haemorrhagic leukoencephalitis. (05 Mar 2000) |