Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 23.06.2025 20:10

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