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 00:22

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