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 01:36

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