If you have a medical condition, even something as simple as an ankle sprain you could get paid for medical treatment. Don’t have insurance, no problem, let the trial sponsors pay you.
There are studies for wisdom teeth removal, medical treatment for diabetes, fevers, flu. Don’t you pay them, let the doctors pay you. Look into clinical studies before you call the doctor. There may be something that you could get compensated for. You’ll be seen by doctors and nurses just like at your regular office visit, and there may be a treatment that works better than something you’ve taken in the past.
Clinical trials can help you and further research in the medical community, therefore helping every one!