Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 02.07.2025 22:33

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