Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 22.06.2025 16:15

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