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 00:17

Some of those things on the list are very very rare cases but I just wanted to cover everything (or almost everything).
Alcohol
Parkinson's disease
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Bipolar disorder
Sleep disorders
Mental disorder
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Brain Tumors
Migraines
Seizures
Alcohol withdrawal
Stress
PTSD
Charles Bonnet syndrome
Delirium tremens
Grief (yes, sadly)
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Affective disorders
Dementia with Lewy bodies
Fever
Hallucinogen use
Withdrawal from benzodiazepines
Alzheimer's disease,
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Infection
⁉️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:
What is something brutally honest that needs to be said?
Head injury
Pharmaceutical drug (abuse or side effects)
Narcolepsy