Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 29.06.2025 11:45

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