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 07:46

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