Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 30.06.2025 05:28

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