Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 03.07.2025 05:56

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