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 00:33

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