G21

Clinical Information

• Conditions which feature clinical manifestations resembling primary parkinson disease that are caused by a known or suspected condition. Examples include parkinsonism caused by vascular injury, drugs, trauma, toxin exposure, neoplasms, infections and degenerative or hereditary conditions. Clinical features may include bradykinesia, rigidity, parkinsonian gait, and masked facies. In general, tremor is less prominent in secondary parkinsonism than in the primary form. from Joynt, Clinical Neurology, 1998, ch38, pp39-42)

Details

• Lewy body dementia

• Lewy body disease

• G21.0

  Malignant neuroleptic syndrome

• G21.1

  Other drug-induced secondary parkinsonism

• G21.11

  Neuroleptic induced parkinsonism

• G21.19

  Other drug induced secondary parkinsonism

• G21.2

  Secondary parkinsonism due to other external agents

• G21.3

  Postencephalitic parkinsonism

• G21.4

  Vascular parkinsonism

• G21.8

  Other secondary parkinsonism

• G21.9

  Secondary parkinsonism, unspecified