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 13:35

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