Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 03.07.2025 05:45

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