Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 01.07.2025 11:44

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