Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 02.07.2025 16:37

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