Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 28.06.2025 08:06

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