Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 30.06.2025 05:30

Brain Tumors
Alcohol withdrawal
Fever
Stress
Charles Bonnet syndrome
Delirium tremens
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Pharmaceutical drug (abuse or side effects)
⁉️sources from my experiences and internet research ⁉️
Alzheimer's disease,
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Narcolepsy
Dementia with Lewy bodies
PTSD
Mental disorder
Infection
Bipolar disorder
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Withdrawal from benzodiazepines
Sleep disorders
Parkinson's disease
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Alcohol
Affective disorders
Seizures
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Head injury
Hallucinogen use
Grief (yes, sadly)
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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:
Migraines
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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