> Doctors are consultants, not priests.

Oh man you couldn't be more spot on. There's no magic in what doctors do and how doctors prescribe a medication. There are two advantages that a doctor can have over an educated layman: 1) Experience: the number of cases they have seen and thus can make an educated inference to what is going on. 2) Their knowledge of anatomy (all they studied during their 4-6 years education).

Having been living with a chronic condition for more than 20 years, having gone to more than 10 specialists in 3 different countries and countless of studies I've seen the limitation of Medical Doctors (they are human beens at the end). There comes a time when you get to see that you understand your body better than any doctor could.

Your circumstance is one of the flaws in the US system. Having been given a solid diagnosis once for that initial $150 charge, instead of relatively-inexpensive maintenance of health that could be done without doctor intervention, we require doctors to re-see and re-prescribe when a patient has a chronic condition.

There is some wisdom in that (while "when you hear hoofbeats, think horses, not zebra" is a good maxim, sometimes it's horses and zebra), but IMHO once you're diagnosed with something chronic and treatable, minimize the red-tape to keep it treated.