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 09:14

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