Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 30.06.2025 15:53

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