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 06:31

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