Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 01.07.2025 01:00

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