| nonconvulsive seizure | A seizure without clonic or tonic activity or other convulsive motor activity. See: complex partial seizure, absence seizure. (05 Mar 2000) |
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| nonepileptic seizure | <neurology> Any behaviour that resembles a seizure, but is not epileptic, i.e., not associated with abnormal cerebral EEG activity. See: psychogenic seizure. (05 Mar 2000) |
| early seizure | A seizure occurring within one week after craniocerebral trauma. (05 Mar 2000) |
| electrographic seizure | A seizure detected by EEG, which has no clinical correlate, i.e., an EEG seizure alone or an electrical seizure alone. Synonym: electrographic seizure. (05 Mar 2000) |
| tonic-clonic seizure | <neurology> A type of seizure that results in loss of consciousness, generalised muscle contractions, urinary incontinence, tongue biting and a post-ictal state (confusion and lethargy) following cessation of the seizure. Synonym: grand-mal seizure. See: epilepsy. (03 Jul 1999) |
| tonic seizure | Sustained contractures of skeletal muscle as occur during convulsions. Synonym: tonic convulsion. (05 Mar 2000) |
| epileptic seizure | A seizure that is caused by epilepsy. (05 Mar 2000) |
| Jacksonian seizure | A brief temporary alteration in movement, sensation or autonomic nerve function caused by abnormal electrical activity in a localised area of the brain. Focal seizures (i.e. Partial or Jacksonian seizures) usually cause no change in awareness or alertness. An example of a focal (partial) seizure would be rhythmic muscle contractions in one area of the body: lip smacking, mouth movements, drooling, head turning, eye movements or seemingly purposeful movements (for example picking at clothes). Other presentations may be strictly sensory with abnormal numbness, tingling or a crawling sensation to the skin. More unusual symptoms include changes in speech, thought, personality, mood, sensation of deja vu or hallucinations. (27 Sep 1997) |
| febrile seizure | <neurology, paediatrics> A convulsion that occurs secondary to a rapid increase in body temperature. Common in infants under two years of age. (27 Sep 1997) |
| late seizure | A seizure that occurs greater than one week after a craniocerebral trauma or CNS insult. (05 Mar 2000) |
| anterior focal point | The point where parallel rays from the retina are focused. (05 Mar 2000) |
| back focal length | <microscopy> As measured on the principal axis, from the second lens vertex to the back focal point of the lens. It is not the equivalent of the focal length. (05 Aug 1998) |
| back focal plane | <microscopy> The plane, normal to the lens axis, situated at the back focus of a lens. (05 Aug 1998) |
| Berger's focal glomerulonephritis | Glomerulonephritis affecting a small proportion of renal glomeruli which commonly presents with haematuria and may be associated with acute upper respiratory infection in young males, not usually due to streptococci; associated with IgA deposits in the glomerular mesangium and may also be associated with systemic disease, as in Henoch-Schonlein purpura. Synonym: Berger's disease, Berger's focal glomerulonephritis, focal nephritis, IgA nephropathy. (05 Mar 2000) |
| glomerulosclerosis, focal | Glomerular disease characterised by focal and segmental areas of glomerular sclerosis, usually commencing in the juxtamedullary glomeruli and gradually spreading to involve other parts of the kidney, with eventual kidney failure. (12 Dec 1998) |