Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 01.07.2025 11:23

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