Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 28.06.2025 09:41

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)
Head injury
Stress
Affective disorders
Infection
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Alcohol
Charles Bonnet syndrome
Hallucinogen use
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Mental disorder
Fever
Migraines
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Grief (yes, sadly)
Some of those things on the list are very very rare cases but I just wanted to cover everything (or almost everything).
Withdrawal from benzodiazepines
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Parkinson's disease
Alzheimer's disease,
Delirium tremens
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Alcohol withdrawal
Dementia with Lewy bodies
Bipolar disorder
Brain Tumors
PTSD
Seizures
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⁉️sources from my experiences and internet research ⁉️
Narcolepsy
Sleep disorders