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

Alzheimer's disease,

Grief (yes, sadly)

Alcohol withdrawal

Pharmaceutical drug (abuse or side effects)

⁉️sources from my experiences and internet research ⁉️

Withdrawal from benzodiazepines

Fever

Alcohol

Seizures

Stress

Affective disorders

Brain Tumors

Sleep disorders

Charles Bonnet syndrome

Head injury

Narcolepsy

Delirium tremens

Parkinson's disease

Dementia with Lewy bodies

Migraines

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

PTSD

Bipolar disorder

Hallucinogen use

Infection

Mental disorder

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

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