Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 25.06.2025 09:34

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