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 10:04

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