| atonic seizure | Seizure characterised by sudden loss of muscle tone. Synonym: akinetic seizure. (05 Mar 2000) |
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| atonic | 1. <medicine> Characterised by atony, or want of vital energy; as, an atonic disease. 2. Unaccented; as, an atonic syllable. 3. Destitute of tone vocality; surd. Origin: Cf. F. Atonique. See Atony. 1. A word that has no accent. 2. An element of speech entirely destitute of vocality, or produced by the breath alone; a nonvocal or surd consonant; a breathing. 3. <medicine> A remedy capable of allaying organic excitement or irritation. Source: Websters Dictionary (01 Mar 1998) |
| atonic bladder | A large, dilated, and nonemptying bladder; usually due to disturbance of innervation or to chronic obstruction. (05 Mar 2000) |
| atonic dyspepsia | Dyspepsia with impaired tone in the muscular walls of the stomach. Synonym: functional dyspepsia. (05 Mar 2000) |
| atonic ectropion | Ectropion of the lower eyelid following paralysis of the orbicularis oculi muscle. Synonym: flaccid ectropion, paralytic ectropion. (05 Mar 2000) |
| atonic entropion | Entropion that follows loss of tone of the orbicularis oculi muscle or elasticity of the skin. (05 Mar 2000) |
| atonic ulcer | An ulcer that shows little or no tendency to heal. (05 Mar 2000) |
| congenital atonic pseudoparalysis | Atonic pseudoparalysis of congenital origin (neither familial nor hereditary), observed especially in infants and characterised by absences of muscular tone only in muscles innervated by the spinal nerves. Synonym: congenital atonic pseudoparalysis, myatonia congenita, Oppenheim's disease, Oppenheim's syndrome. An indefinite term for a number of congenital neuromuscular disorders that cause generalised myotonia in young children, and that have a benign course (static or regressive). (05 Mar 2000) |
| absence seizure | <neurology> A type of seizure that in contrast to the grand mal seizure, are noted for their brevity and for the degree of loss of awareness (brief staring spell) accompanied by minimal motor manifestations. A common form of childhood epilepsy. (06 Oct 1997) |
| akinetic seizure | Seizure characterised by sudden loss of muscle tone. Synonym: akinetic seizure. (05 Mar 2000) |
| atypical absence seizure | An absence seizure associated with an EEG pattern of irregular or slow spike and wave at less than 2.5 Hz or paroxysmal fast activity on an abnormally slow background EEG. (05 Mar 2000) |
| audiogenic seizure | A reflex seizure precipitated by loud noises, rare in humans. Audiogenic seizures in rodents are an animal model of epilepsy. (05 Mar 2000) |
| major motor seizure | A grand mal seizure or other convulsive seizure. (05 Mar 2000) |
| gelastic seizure | A seizure characterised by laughing. This seizure type is often accompanied by hypothalamic lesions, such as hamartomas. (05 Mar 2000) |
| generalised 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) |