Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 27.06.2025 18:14

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