Parkinson’s Treatment Tips on Psychosis and Hallucinations …

These are quick tips to work on with your doctor in case of acute worrisome hallucinations and psychosis in the setting of Parkinsons disease:

Psychosis in Parkinsons disease generally comes in two forms: hallucinations (when patients see or hear or feel things that arent really there) or delusions (which are fixed false beliefs). When hallucinations occur, they are mostly visual (usually these are non-threatening, and patients mostly see small people or animals, or loved ones who have already died, not interacting with them but doing their own thing) (Zahodne and Fernandez 2008a; Zahodne and Fernandez 2008b; Fernandez 2008; Fernandez et al 2008; Friedman and Fernandez 2000). Sometimes, they can be threatening, but this is less common. Auditory hallucinations (more commonly seen in schizophrenia) are rare in Parkinsons disease and if they do occur, they are usually accompanied by visual hallucinations.

Delusions are usually of a common theme, typically of spousal infidelity. Other themes are often paranoid in nature (such as thinking that people are out to steal from ones belongings, or to harm or place poison on their food, or substitute their Parkinson medications, etc.) Because they are paranoid in nature, they can be more threatening and more immediate action is often necessary, compared to visual hallucinations (Zahodne and Fernandez 2008a; Zahodne and Fernandez 2008b; Fernandez 2008; Fernandez et al 2008; Friedman and Fernandez 2000). It is not uncommon that patients actually call 9-1-1 or the police to report a burglary or a plot to hurt them.

Unfortunately, psychosis occurs in up to 40% of Parkinsons disease patients (Fenelon et al 2000). In the early stage of Parkinsons disease psychosis, the patient often still has a clear understanding and retains their insight, but this tends to worsen over time and insight may eventually be lost. At later stages, patients may be confused and have impaired reality testing; that is, they are unable to distinguish personal, subjective experiences from the reality of the external world. Psychosis in Parkinsons disease patients frequently occurs initially in the evening, then later on spills into the rest of the day.

Psychosis in Parkinsons disease is believed to be due to long term use of parkinsonian medications especially dopaminergic and anticholinergic drugs (Fenelon 2008; Zahodne and Fernandez 2008a; Zahodne and Fernandez 2008b; Fernandez 2008; Fernandez et al 2008; Friedman and Fernandez 2000). However, significant medication exposure is no longer a pre-requisite in Parkinsons disease psychosis (Ravina, Marder, Fernandez, et al 2007). The continuum hypothesis states that medication-induced psychiatric symptoms in Parkinsons disease starts with sleep disturbances accompanied by vivid dreams, and then develops into hallucinations and delusions, and ends in delirium. However this theory is now being challenged (Goetz 1998).

The urgency of treatment will depend on the type and characteristics of psychosis. Sometimes, when the hallucinations are mild and benign, and insight is retained, it is best that the Parkinson regimen be kept as is. However, when a patient is experiencing more threatening paranoid delusions, then more aggressive treatment is warranted (Zahodne and Fernandez 2008a; Zahodne and Fernandez 2008b; Fernandez 2008; Fernandez et al 2008; Friedman and Fernandez 2000).

The management of psychosis includes:

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Parkinson's Treatment Tips on Psychosis and Hallucinations ...