Encephalitis lethargica

Parkinson's disease and parkinsonism - Encephalitis lethargica Factor

Last reviewed for CCPS 26 September 2007.

Preliminary questions [23248]

23261 there is some evidence that encephalitis lethargica may be a factor in the development or worsening of the condition under consideration.

23262 the veteran has suffered from encephalitis lethargica at some time.

23263 — the veteran has established the causal connection between the encephalitis lethargica and VEA service for Parkinson's disease or parkinsonism.

23270 the veteran was suffering from encephalitis lethargica before the clinical onset of the condition under consideration.

23264 — the veteran has established the causal connection between the encephalitis lethargica and VEA service for the clinical onset of parkinsonism.

23266 — the veteran has established the causal connection between the encephalitis lethargica and operational service for the clinical onset of parkinsonism.

or

23267 — the veteran has established the causal connection between the encephalitis lethargica and eligible service for the clinical onset of parkinsonism.

or

7334

the clinical onset of the condition under consideration occurred after the end of the veteran's last period of VEA service.

7335

the condition under consideration permanently worsened.

23271

the veteran was suffering from encephalitis lethargica before the clinical worsening of the condition under consideration.

23265 — the veteran has established the causal connection between the encephalitis lethargica and VEA service for the clinical worsening of Parkinson's disease or parkinsonism.

23268 — the veteran has established the causal connection between the encephalitis lethargica and operational service for the clinical worsening of Parkinson's disease or parkinsonism.

or

23269 — the veteran has established the causal connection between the encephalitis lethargica and eligible service for the clinical worsening of Parkinson's disease or parkinsonism.

Clinical onset and operational service [23266]

38596 — the veteran has parkinsonism.

23272 — the encephalitis lethargica is causally related to operational service.

Clinical onset and eligible service [23267]

38596 — the veteran has parkinsonism.

23273 — the encephalitis lethargica is causally related to eligible service.

Clinical worsening and operational service [23268]

23272 — the encephalitis lethargica is causally related to operational service.

25048

the clinical onset of the condition under consideration occurred prior to that part of operational service to which the encephalitis lethargica is causally related.

Clinical worsening and eligible service [23269]

23273 — the encephalitis lethargica is causally related to eligible service.

25049

the clinical onset of the condition under consideration occurred prior to that part of eligible service to which the encephalitis lethargica is causally related.