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

Alcohol

Grief (yes, sadly)

Withdrawal from benzodiazepines

Hallucinogen use

Stress

Head injury

⁉️sources from my experiences and internet research ⁉️

Fever

Alcohol withdrawal

Seizures

Delirium tremens

PTSD

Sleep disorders

Bipolar disorder

Infection

Parkinson's disease

Migraines

Charles Bonnet syndrome

Narcolepsy

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

Affective disorders

Mental disorder

Dementia with Lewy bodies

Brain Tumors

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

Alzheimer's disease,

Pharmaceutical drug (abuse or side effects)

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