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What Are Persecutory Delusions? Examples and How To Help

Medically reviewed by Ifeanyi Nwaka, M.D.
Written by Joan Grossman
Updated on September 17, 2026

Key Takeaways

  • Persecutory delusions, or the false belief that others are out to get you, are the most common type of delusion in people with Parkinson's disease and can be one of the hardest symptoms to navigate for both the person living with the condition and their loved ones.
  • Persecutory delusions are a symptom of Parkinson's disease psychosis, which affects an estimated quarter to 40 percent of people with Parkinson's, and they can be linked to medication side effects, disease progression, cognitive changes, or other health conditions. Caregivers can help during a delusion by staying calm, avoiding arguments, listening with empathy, and keeping the environment free of potential hazards.
  • Talking with a neurologist is an important first step, as they can help explore options for managing delusions, and caregivers are also encouraged to look after their own mental health through counseling, support groups, or respite care.
  • View all takeaways

Persecutory delusions, or the false belief that someone is out to get you, can be one of the most challenging symptoms of Parkinson’s disease (PD).

“Delusions, delusions, delusions,” wrote one MyParkinsonsTeam member who is a caregiver for a relative with Parkinson’s. “Off to a bad start.”

Here’s what to know about delusions of persecution and how they can be managed.

🗳️ Have you or a loved one experienced persecutory delusions?
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What Are Persecutory Delusions?

Persecutory delusions are the most common type of delusion in people with Parkinson’s. They occur when someone falsely believes that others are treating them badly or taking advantage of them.

People who experience persecutory delusions may exhibit outbursts of anger, agitation, or violent behavior.

People may develop delusions of persecution from other causes, including drug use, other health conditions, and some types of mental illnesses, such as schizophrenia, schizoaffective disorder, and bipolar disorder.

It’s also possible to have a diagnosis of delusion disorder. Persecutory delusions disorder is a subtype of this diagnosis.

Examples of Persecutory Delusions

Although persecutory delusions are based on false beliefs, they tend to involve situations that could be possible in real life, as opposed to bizarre delusions that involve circumstances that would be impossible and are based on outlandish situations.

Examples of persecutory delusions include:

  • A fear of being attacked
  • A feeling of being harassed
  • A belief that there’s a dangerous conspiracy
  • A belief that people are lying
  • A sense that something harmful is about to happen
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Below are some examples of persecutory delusions MyParkinsonsTeam members have experienced:

“My husband wakes up and thinks someone is grabbing him or something.”

“My mother had a severe delusional episode this morning where she accused me and the caregiver of trying to murder her.”

“My mother-in-law believes people are watching her, recording her, after her, the cops are after her, that she is being abused. She is just so afraid.”

“I began to have delusions. I thought that my children were taking money from me.”

What Causes Persecutory Delusions in Parkinson’s?

Delusions are a symptom of Parkinson’s disease psychosis (PDP). This is when some people with Parkinson’s have trouble distinguishing reality from things that are imagined. PDP consists of delusions and hallucinations, when people perceive things that are not there.

Studies estimate a quarter to 40 percent of people with Parkinson’s disease experience symptoms of psychosis. Delusions are not as common as hallucinations — 4 percent of people with PD have delusions.

People with Parkinson’s may experience other types of delusions as well. These include:

  • Delusions of grandiosity or self-importance
  • Delusions of jealousy and infidelity
  • Capgras delusions (believing an imposter has replaced someone)

Risk Factors for Persecutory Delusions

Delusions are often associated with Parkinson’s medication side effects and Parkinson’s disease progression. Cognitive impairment (trouble thinking), dementia, depression, and sleep disorders are also risk factors for delusions.

Delusions can also be caused by some types of infection and other health conditions such as stroke and heart attack.

In general, persecutory delusions are more common in males than in females, according to the journal Neurological Sciences.

How To Help Someone With Persecutory Delusions

If you or someone you care about is living with Parkinson’s and experiencing persecutory delusions, there are steps you can take to help manage this difficult symptom.

Talk to a Neurologist

First, it’s important to discuss delusions with a neurologist to determine whether a change in medication or other medical treatment may be warranted. A doctor can also conduct tests to find out if a person’s delusions are the result of another condition or an untreated infection.

Your or your loved one’s doctor may recommend:

  • Treatments to help manage persecutory delusions, such as antipsychotic medications
  • Psychotherapy or cognitive behavioral therapy (CBT)

Stay Calm During a Persecutory Delusion

If you’re a caregiver for someone living with Parkinson’s, here are some things you can do to help manage a persecutory delusion when it occurs:

  • Stay calm and reassure them that everything will be all right.
  • Avoid arguing or trying to convince them that their belief isn’t true.
  • Ask them what they are feeling, and let them know you are listening to them so that they don’t feel threatened by you.
  • If they become agitated or physically aggressive, remain still and calm.

When a person’s delusion has subsided, sometimes it can be helpful to talk to them and calmly ask them about the experience. If this type of conversation is disturbing for them, however, it’s best to avoid agitating them.

Control Access To Dangerous Items

You can help keep your home safer for loved ones who have persecutory delusions, especially if they’ve ever become aggressive. Keep anything that could be dangerous, such as knives or heavy objects, out of reach.

Additionally, clear out clutter and obstacles that could pose tripping hazards.

Learn When You Need Emergency Support

If a situation feels dangerous and you’re worried about your safety or the safety of the person experiencing the delusion, call 911 or emergency services.

EMTs are trained to perform interventions with people who may be experiencing a persecutory delusion and can help ensure that no one is harmed. In difficult situations, a delusional person may require hospitalization for their mental health condition in order to be stabilized.

Take Care of Yourself

Persecutory delusions can take a major toll on caregivers. Members have shared:

  • “She was so out of control. I’m not sure if her regular caregiver will stay with us for much longer.”
  • “I’m the wife of a husband with advanced PD. It’s extremely difficult to deal with. He has delusions/hallucinations/paranoia.”
  • “My mother has become increasingly paranoid and is treating her caregivers and my father/her husband terribly.”

Even though you’re focused on your loved one, it’s important to take care of your mental health. If you’re dealing with the emotional weight of persecutory delusions, you may benefit from counseling and support groups for other caregivers.

If you’re a full-time caregiver, you may want to look into respite care options, or see if other family members or friends are available to give you some time off.

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