Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 02.07.2025 07:49

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