Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 29.06.2025 14:55

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