Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 29.06.2025 05:58

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