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 00:51

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