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

Grief (yes, sadly)

Head injury

Hallucinogen use

Alzheimer's disease,

Stress

Mental disorder

Affective disorders

Fever

Bipolar disorder

Parkinson's disease

Brain Tumors

Seizures

Infection

Alcohol

Sleep disorders

Migraines

⁉️sources from my experiences and internet research ⁉️

Delirium tremens

Alcohol withdrawal

Dementia with Lewy bodies

PTSD

Narcolepsy

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

Withdrawal from benzodiazepines

Charles Bonnet syndrome

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)

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