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 13:27

Alzheimer's disease,
Mental disorder
Parkinson's disease
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Charles Bonnet syndrome
Grief (yes, sadly)
⁉️sources from my experiences and internet research ⁉️
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Withdrawal from benzodiazepines
Brain Tumors
Head injury
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Alcohol withdrawal
Sleep disorders
Delirium tremens
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Fever
Affective disorders
Pharmaceutical drug (abuse or side effects)
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Migraines
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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Alcohol
Hallucinogen use
Dementia with Lewy bodies
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Stress
PTSD
Seizures
Infection
Narcolepsy
Bipolar disorder