I went to a dermatologist decades ago about a toenail fungus. I was prescribed some drug that was a tiny little pill, to be taken once a month for three months. This was the early years of the internet, and when I trusted doctors. It turned out that the doctor was supposed to do a blood test after the first pill to see if I was one of the rare people who react VERY badly to the pills. After the second dose, I got drug-induced hepatitis. I went back to the doctor, and asked her why she didn't have the blood test done (I'm not sure how I found out that should have been done), and she said, "Well, it's such a rare thing I didn't think a blood test was necessary". I kid you not. To this day, I have a less-than-fully-functional liver. I should have sued, but didn't. (I could have used the money to pay for graduate school :) ) It is because of that incident, and a few others involving other family members, that I have no trust in medical doctors anymore, and unless I'm unconscious, or bleeding really badly, or have a broken bone, I will avoid a hospital visit if at all possible.