Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 28.06.2025 11:31

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