Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 26.06.2025 02:31

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