Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 23.06.2025 10:09

Pharmaceutical drug (abuse or side effects)
PTSD
Charles Bonnet syndrome
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Grief (yes, sadly)
Brain Tumors
⁉️sources from my experiences and internet research ⁉️
Head injury
Hallucinogen use
Delirium tremens
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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).
Dementia with Lewy bodies
Bipolar disorder
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Stress
Fever
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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Sleep disorders
Alzheimer's disease,
Alcohol
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Affective disorders
Infection
Narcolepsy
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Migraines
Alcohol withdrawal
Mental disorder
Withdrawal from benzodiazepines
Parkinson's disease
Seizures