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 00:04

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