| ACA | abnormal coronary artery; acrodermatitis chronica atrophicans; acute cerebellar ataxia; adenocarcino... |
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| ADR | activation, depression, repetition [in bone remodeling]; adrenodoxin reductase; Adriamycin; adverse ... |
| AEM | Academic Emergency Medicine [journal]; analytical electron microscopy; ambulatory electrocardiograph... |
| AEMK | ataxia episodica with myokymia |
| AMC | academic medical center; acetylmethyl carbinol; Animal Medical Center; antibody-mediated cytotoxicit... |
| hysterical gait | A variety of bizarre gaits seen with hysteria-conversion reaction; usually the foot is dragged or pushed ahead, instead of lifted, while walking; frequently the foot is held dorsiflexed and inverted. (05 Mar 2000) |
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| spastic gait | Gait in which the leg is stiff, without flexion at knee and ankle, and with each step is rotated away from the body, then towards it, forming a saemicircle. Synonym: circumduction gait, spastic gait. (05 Mar 2000) |
| steppage gait | A gait in which the advancing foot is lifted higher than usual so that it can clear the ground, because it cannot be dorsiflexed. Seen with peroneal neuropathies and other disorders causing foot dorsiflexion weakness. See: high steppage gait. Synonym: steppage. (05 Mar 2000) |
| toppling gait | <neurology> A gait in which the steps are uncertain and hesitant, and the patient totters and sometimes falls; probably due to a balance disorder; may be seen in elderly patients after a stroke. (06 Mar 2000) |
| equine gait | A gait in which the foot is raised high to avoid catching a drooping foot and brought down suddenly in a flapping manner; often seen in peroneal nerve palsy and tabes. Synonym: equine gait. (05 Mar 2000) |
| festinating gait | Gait in which the trunk is flexed, legs are flexed at the knees and hips, but stiff, while the steps are short and progressively more rapid; characteristically seen with parkinsonism and other neurologic diseases. Synonym: festination. (05 Mar 2000) |
| acute ataxia | Generalised ataxia of abrupt onset, most often caused by drug intoxications, poisonings, or vestibular neuronitis. (05 Mar 2000) |
| ataxia | <neurology> Failure of muscular coordination, irregularity of muscular action. Origin: Gr. Taxis = order (16 Dec 1997) |
| ataxia cordis | <cardiology> A condition where there is disorganised electrical conduction in the atria, resulting in ineffective pumping of blood into the ventricle. Acronym: AF (02 Jan 1998) |
| ataxia of calves | A specific cerebellar ataxia in the Jersey breed, probably a recessive genetic trait. (05 Mar 2000) |
| ataxia of lambs | Myelination failure seen in ewes on a copper-deficient diet. (05 Mar 2000) |
| ataxia-telangiectasia | <neurology, oncology> An intriguing autosomal recessive disorder in which a single defective gene produces myriad and protean effects, presents with cerebellar ataxia, telangiectasias in the eyes and skin, immune deficiency and autoimmune phenomena, propensity for lymphoid and other malignancies, excessive sensitivity to ionising radiation, increased serum alpha-fetoprotein concentrations and a tendency for chromosome breakage and translocation. A syndrome characterised by choreoathetosis beginning in childhood, progressive cerebellar ataxia, telangiectasis of conjunctiva and skin, slowly progressive mental deterioration and increasing cerebellar degeneration. There is evidence that heterozygotes show an increased susceptibility to malignancy as well, with breast cancer often cited. The gene was localised by linkage studies to chromosome 11q22-23, and recently cloned, revealing it to be homologous to the PI-3 kinase family so that prenatal diagnosis by RFLP analysis is possible. Other related genes are suspected to exist. Diagnosis in affected patients is made on clinical grounds, by detection of high concentrations of alpha-fetoprotein, and by a specialised cell culture assay for radiosensitivity and atypical radioresistant DNA synthesis. These cell culture methods are also used for prenatal diagnosis. A characteristic autopsy feature of ataxia-telangiectasia is the presence of empty basket cells in the cerebellum which results from degeneration of the previously contained Purkinje cells. Inheritance: autosomal recessive. (16 Dec 1998) |
| ataxia telangiectasia syndrome | ataxia telangiectasia |
| bovine congenital ataxia | An autosomal recessive ataxia seen in several European breeds of cattle. (05 Mar 2000) |
| Briquet's ataxia | Weakening of the muscle sense and increased sensibility of the skin, in hysteria. Synonym: hysterical ataxia. (05 Mar 2000) |