Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 02.07.2025 01:11

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