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

Bipolar disorder

Brain Tumors

⁉️sources from my experiences and internet research ⁉️

Stress

Parkinson's disease

Charles Bonnet syndrome

PTSD

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

Delirium tremens

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

Migraines

Grief (yes, sadly)

Fever

Mental disorder

Withdrawal from benzodiazepines

Alzheimer's disease,

Alcohol

Affective disorders

Hallucinogen use

Pharmaceutical drug (abuse or side effects)

Head injury

Alcohol withdrawal

Narcolepsy

Infection

Sleep disorders

Seizures

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