Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 02.07.2025 09:28

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