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 02:24

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