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 19:48

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