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 02:25

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