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 05:36

Migraines
Pharmaceutical drug (abuse or side effects)
Grief (yes, sadly)
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Seizures
Hallucinogen use
Head injury
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Dementia and drug use cause paranoia. That is very common. Some of other things that can include delusions and/or hallucination can be:
Fever
Sleep disorders
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Bipolar disorder
Brain Tumors
Alcohol
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Parkinson's disease
Infection
Narcolepsy
Mental disorder
Alcohol withdrawal
Withdrawal from benzodiazepines
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PTSD
Delirium tremens
Affective disorders
Jets from black holes J1405+0415 and J1610+1811 - BBC Sky at Night Magazine
Charles Bonnet syndrome
Dementia with Lewy bodies
Alzheimer's disease,
⁉️sources from my experiences and internet research ⁉️
Stress
Some of those things on the list are very very rare cases but I just wanted to cover everything (or almost everything).