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 14:12

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