Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 28.06.2025 07:22

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