Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 27.06.2025 00:58

Alzheimer's disease,
Dementia with Lewy bodies
Pharmaceutical drug (abuse or side effects)
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Affective disorders
Mental disorder
PTSD
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Grief (yes, sadly)
Parkinson's disease
⁉️sources from my experiences and internet research ⁉️
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Head injury
Infection
Dementia and drug use cause paranoia. That is very common. Some of other things that can include delusions and/or hallucination can be:
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Seizures
Delirium tremens
Migraines
Stress
Withdrawal from benzodiazepines
Charles Bonnet syndrome
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Narcolepsy
Hallucinogen use
Alcohol
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Brain Tumors
Alcohol withdrawal
Bipolar disorder
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Some of those things on the list are very very rare cases but I just wanted to cover everything (or almost everything).
Fever
Sleep disorders
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