Can certain diseases cause paranoia similar to that seen in...

Migraines

Bipolar disorder

Fever

Brain Tumors

Charles Bonnet syndrome

Withdrawal from benzodiazepines

⁉️sources from my experiences and internet research ⁉️

Delirium tremens

Hallucinogen use

Narcolepsy

Seizures

PTSD

Infection

Alcohol

Some of those things on the list are very very rare cases but I just wanted to cover everything (or almost everything).

Pharmaceutical drug (abuse or side effects)

Parkinson's disease

Grief (yes, sadly)

Alzheimer's disease,

Mental disorder

Alcohol withdrawal

Head injury

Affective disorders

Stress

Sleep disorders

Dementia and drug use cause paranoia. That is very common. Some of other things that can include delusions and/or hallucination can be:

Dementia with Lewy bodies

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