Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 01.07.2025 07:59

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)
Alcohol withdrawal
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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).
Head injury
Delirium tremens
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Parkinson's disease
Stress
Fever
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Sleep disorders
Migraines
Affective disorders
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Withdrawal from benzodiazepines
PTSD
Alzheimer's disease,
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⁉️sources from my experiences and internet research ⁉️
Bipolar disorder
Narcolepsy
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Hallucinogen use
Charles Bonnet syndrome
Infection
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Grief (yes, sadly)
Brain Tumors
Dementia with Lewy bodies
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Mental disorder
Alcohol
Seizures