Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 01.07.2025 00:52

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