| TCD | tapetochoroidal dystrophy; T-cell depletion; thermal conductivity detector; tissue culture dose; tra... |
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| TD | tabes dorsalis; tardive dyskinesia; T-cell dependent; temporary disability; terminal device; tetanus... |
| TD | the time required to double the number of cells in a given population; thermal death time |
| TDP | thermal death point; thoracic duct pressure; thymidine diphosphate; total degradation products |
| TDT | terminal deoxynucleotidyltransferase; thermal death time; tone decay test; tumor doubling time |
| Marie's ataxia | An obsolete term for a variety of non-Friedreich hereditary ataxias. (05 Mar 2000) |
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| vestibulocerebellar ataxia | Ataxia due to disease of the central vestibular system or its cerebellar components, manifested clinically by an unsteady gait, nystagmus, and incoordination of arm and leg movements. (05 Mar 2000) |
| respiratory ataxia | Completely irregular breathing pattern, with continually variable rate and depth of breathing; results from lesions in the respiratory centres in the brainstem, extending from the dorsomedial medulla caudally to the obex. Synonym: ataxic breathing, Biot's breathing, respiratory ataxia. (05 Mar 2000) |
| cerebellar ataxia | Loss of muscle coordination caused by disorders of the cerebellum. (05 Mar 2000) |
| chronic ataxia | Persistent ataxia, most often caused by hereditary cerebellar or metabolic disorders. (05 Mar 2000) |
| moral ataxia | Inconstancy of ideas and of conscious intent, as a manifestation of hysteria. (05 Mar 2000) |
| motor ataxia | Ataxia developing upon attempting to perform coordinated muscular movements. Synonym: kinetic ataxia. (05 Mar 2000) |
| hereditary ataxia | A simple autosomal recessive trait in fox terrier dogs that produces a progressive general ataxia. (05 Mar 2000) |
| hereditary cerebellar ataxia | A disease of later childhood and early adult life, marked by ataxic gait, hesitating and explosive speech, nystagmus, and sometimes optic neuritis. It probably comprises several distinct conditions with diverse patterns of inheritance. Collective term for a number of hereditary disorders in which cerebellar signs are the most prominent finding. (05 Mar 2000) |
| hereditary spinal ataxia | Sclerosis of the posterior and lateral columns of the spinal cord, occurring in children and marked by ataxia in the lower extremities, extending to the upper, followed by paralysis and contractures; autosomal recessive inheritance. See: spinocerebellar ataxia. Synonym: Friedreich's ataxia, heredotaxia. (05 Mar 2000) |
| sensory ataxia | An ataxia due to impairment of position sense caused by lesions located at some point along the central or peripheral sensory pathways. (05 Mar 2000) |
| hysterical ataxia | Weakening of the muscle sense and increased sensibility of the skin, in hysteria. Synonym: hysterical ataxia. (05 Mar 2000) |
| spinal ataxia | Ataxia due to spinal cord disease, as in tabes dorsalis. (05 Mar 2000) |
| spinocerebellar ataxia | The most common hereditary ataxia, with onset in middle to late childhood, manifested as limb ataxia, nystagmus, kyphoscoliosis, and pes cavus; the major pathological changes are found in the posterior columns of the spinal cord; most often autosomal recessive inheritance. (05 Mar 2000) |
| static ataxia | Inability to preserve equilibrium while standing, due to loss of myesthesia; present during the resting state. (05 Mar 2000) |