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 06:14

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