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 06:00

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