Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 27.06.2025 08:20

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