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 00:11

Bipolar disorder
Hallucinogen use
Charles Bonnet syndrome
Head injury
Withdrawal from benzodiazepines
Brain Tumors
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⁉️sources from my experiences and internet research ⁉️
Parkinson's disease
Dementia with Lewy bodies
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Migraines
Alcohol withdrawal
Fever
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Stress
Narcolepsy
PTSD
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Pharmaceutical drug (abuse or side effects)
Grief (yes, sadly)
Affective disorders
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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).
Alcohol
Sleep disorders
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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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Alzheimer's disease,
Mental disorder
Seizures
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