Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 29.06.2025 08:55

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