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 02:53

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