C615.1 Ataxias
Congenital causes
Degenerative and/or genetic causes
Friedreich ataxia
- Neurologic findings
- Dysarthria, limb weakness, loss of DTR, progressive gait and limb ataxia
- Loss of position and vibratory senses
- Imaging may reveal cervical spinal cord atrophy
- Skeletal comorbidities
- Kyphoscoliosis and pes cavus
- Cardiac comorbidities
- Hypertrophic cardiomyopathy
- Increased risk of arrhythmia and heart failure, usually leading to death by age 40.
- Diagnosis – genetic testing – excessive GAA repeat
Endocrinologic causes
Infectious, postinfectious, and inflammatory causes
Acute postinfectious cerebellar ataxia
m/c cause of ataxia in children.
Symptoms occur approximately 1-3 weeks after infection and generally resolve spontaneously within 2 weeks.
No specific diagnostic test exists.
Clinical diagnosis of exclusion.
Transverse myelitis
Metabolic causes
Neoplastic causes
Primary psychogenic causes
Toxic causes
Traumatic causes
Vascular causes
C615.2 Chorea, Athetosis, Tremor
C615.3 Myoclonus
C615.4 Dystonia
Inherited primary dystonias
Drug-induced dystonias
Cerebral palsy
See C616.1
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