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 21:18

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