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 17:15

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