Can certain diseases cause paranoia similar to that seen in individuals with paranoid schizophrenia, even if they do not have the disorder?
Last Updated: 02.07.2025 15:09

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