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 05:55

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