Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 22.06.2025 03:00

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