Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 27.06.2025 12:55

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