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 02:55

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