I have said several times on this forum that I do not have health insurance and I can't afford to go to a doctor. I can't afford to get pre-existing conditions on my record, either, which would harm my future health coverage.
And, I do not need a doctor to tell me I'm allergic to something that I can see for myself that I am allergic to.
There is no medicine for allergy to a vegetable - you simply avoid the vegetable. Therefore, a doctor could not help me with this.