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 15:43

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