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 00:08

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