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 19:06

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