Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 27.06.2025 09:32

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