Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 30.06.2025 01:42

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