Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 26.06.2025 09:18

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