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 04:02

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