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 11:08

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