Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 26.06.2025 12:57

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