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

Sleep disorders

Mental disorder

Infection

Stress

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

Hallucinogen use

⁉️sources from my experiences and internet research ⁉️

Affective disorders

Dementia with Lewy bodies

Narcolepsy

Pharmaceutical drug (abuse or side effects)

Fever

Head injury

Bipolar disorder

Withdrawal from benzodiazepines

Alcohol withdrawal

PTSD

Delirium tremens

Migraines

Brain Tumors

Charles Bonnet syndrome

Grief (yes, sadly)

Alzheimer's disease,

Seizures

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

Alcohol

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