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

Charles Bonnet syndrome

Mental disorder

Alcohol

Hallucinogen use

Grief (yes, sadly)

Fever

Head injury

Brain Tumors

⁉️sources from my experiences and internet research ⁉️

Stress

Infection

Withdrawal from benzodiazepines

Narcolepsy

Sleep disorders

Affective disorders

Seizures

Dementia with Lewy bodies

PTSD

Migraines

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

Parkinson's disease

Bipolar disorder

Alzheimer's disease,

Alcohol withdrawal

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

Pharmaceutical drug (abuse or side effects)

Delirium tremens

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