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 05:24

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