In a hospital or a clinic or a doctor's office, a person seeking or receiving care is a patient. I think we all agree on that statement. If you are close enough to smell patients, it is a clinical experience.
If I have dementia, or if I physically disabled, or if I have a psychiatric illness I may be a "patient" to the visiting nurse or physical therapist who comes to my home and while being cared for by those professionals I might assume the title, "patient". I think that we can agree that when a nurse, physician or other health care provider provides clinical services, the person receiving those services might correctly be called a patient (although some providers prefer terms such as "client") but when someone comes into my abode to give me a haircut, or pray with me, or drink a cup of tea with me, am I still patient? If I go out in the car for a ride to Walmart, am I a patient? If I am so young that I am still attending school, and I have a physical disability or a inborn error of metabolism, am I a patient when I am in the classroom or the lunchroom?
Is it really so hard to distinguish between patients and non-patients? Do you understand that respecting persons means respecting their identify as patients and non-patients depending on the setting and circumstances?