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 16:40

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