Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 26.06.2025 14:33

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