Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 28.06.2025 03:17

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