Parkinson’s disease in adults

Combination treatment for Parkinson's disease dementia:- What is the effectiveness of combination treatment with a cholinesterase inhibitor and memantine for people with Parkinson's disease dementia if treatment with a cholinesterase inhibitor alone is not effective or no longer effective?

Orthostatic hypotension treatment:- For people with Parkinson's disease, what is the most effective pharmacological treatment for orthostatic hypotension?
Particular interventions and comparisons of interest are:
- midodrine compared with fludrocortisone (primary comparison)
- pyridostigmine
- ephedrine
- pseudoephedrine.

Psychotic symptoms (hallucinations and delusions):- What is the effectiveness of rivastigmine compared with atypical antipsychotic drugs for treating psychotic symptoms (particularly hallucinations and delusions) associated with Parkinson's disease?

Rapid eye movement sleep behaviour disorder treatment:- What is the best first-line treatment for rapid eye movement sleep behaviour disorder (RBD) in people with Parkinson's disease?

Physiotherapy:- Does physiotherapy started early in the course of Parkinson's disease, as opposed to after motor symptom onset, confer benefits in terms of delaying symptom onset and/or reducing severity?