Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 23.06.2025 23:01

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