Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 28.06.2025 01:31

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