Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 03.07.2025 01:30

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