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 02:34

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