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 00:48

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