Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 29.06.2025 08:08

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