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 11:10

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