Neurocognitive disorder with lewy bodies
Meaning of neurocognitive disorder with lewy bodies: For the purposes of this Statement of Principles, neurocognitive disorder with Lewy bodies means a central nervous system neurodegenerative disorder meeting the following clinical diagnostic criteria (derived from DSM-5): A. Evidence of major neurocognitive disorder or mild neurocognitive disorder. B. The disorder has an insidious onset and gradual progression. C. The disorder meets at least two of the following diagnostic features: (i) fluctuating cognition with pronounced variations in attention and alertness; (ii) recurrent visual hallucinations that are well formed and detailed; (iii) spontaneous features of Parkinson's disease or secondary Parkinsonism at least one year after the clinical onset of cognitive symptoms; or (iv) rapid eye movement (REM) sleep behaviour disorder. D. The cognitive deficits in Criteria A, B and C are not primarily due to any of the following: (i) delirium; (ii) another mental disorder (for example, major depressive disorder, schizophrenia); or (iii) cerebrovascular disease, another neurodegenerative disease (for example, Alzheimer disease, Parkinson's disease, Huntington's chorea), brain tumour, subdural haematoma, the effects of a substance, or syst
Reasonable Hypothesis (RH) — Statement of Principles No. 35 of 2019
At least one of the following factors must as a minimum exist before it can be said that a reasonable hypothesis has been raised connecting neurocognitive disorder with Lewy bodies or death from neurocognitive disorder with Lewy bodies with the circumstances of a person's relevant service:
- (1)having major depressive disorder at least ten years before the clinical onset of neurocognitive disorder with Lewy bodies;
- (2)having posttraumatic stress disorder at least ten years before the clinical onset of neurocognitive disorder with Lewy bodies;
- (3)being treated with an antipsychotic drug at the time of the clinical worsening of neurocognitive disorder with Lewy bodies;
- (4)being treated with an anticholinergic drug from the specified list of anticholinergic drugs, at the time of the clinical worsening of neurocognitive disorder with Lewy bodies;
Note: specified list of anticholinergic drugs is defined in the Schedule 1 - Dictionary.
- (5)inability to obtain appropriate clinical management for neurocognitive disorder with Lewy bodies;
Aggravation-only factors: the factors in subsections 9(3) to 9(5) apply only to material contribution to, or aggravation of, the condition where it was suffered or contracted before or during (but did not arise out of) the person’s relevant service.
Balance of Probabilities (BoP) — Statement of Principles No. 36 of 2019
2 factors
At least one of the following factors must exist before it can be said that, on the balance of probabilities, neurocognitive disorder with Lewy bodies or death from neurocognitive disorder with Lewy bodies is connected with the circumstances of a person's relevant service:
- (1)being treated with an antipsychotic drug at the time of the clinical worsening of neurocognitive disorder with Lewy bodies;
- (2)inability to obtain appropriate clinical management for neurocognitive disorder with Lewy bodies;
Aggravation-only factors: the factors in subsections 9(1) and 9(2) apply only to material contribution to, or aggravation of, the condition where it was suffered or contracted before or during (but did not arise out of) the person’s relevant service.
