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 23:47

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