Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 28.06.2025 00:24

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