Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 25.06.2025 11:02

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