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 03:11

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