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

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,

Fever

Brain Tumors

Mental disorder

Infection

Charles Bonnet syndrome

Head injury

Stress

Affective disorders

⁉️sources from my experiences and internet research ⁉️

Alcohol

Seizures

Hallucinogen use

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

Alcohol withdrawal

Delirium tremens

Pharmaceutical drug (abuse or side effects)

Parkinson's disease

Dementia with Lewy bodies

Grief (yes, sadly)

Bipolar disorder

PTSD

Sleep disorders

Migraines

Narcolepsy

Withdrawal from benzodiazepines

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