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 00:45

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