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 05:52

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