Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 01.07.2025 00:06

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