In general, if there is a major concern, it is best to give this the full attention it deserves. If there are minor concerns that you would like to discuss with your dermatologist afterward, you can do so, provided there’s enough time.
For example, if you would like to discuss a bothersome rash, but also have some warts, it would be best to direct the doctor’s attention to the rash first, and then, time permitting, discuss the warts.
If you have several, more minor concerns, it may be possible to address all ofthem in the same visit. For example, if you have hand dermatitis from hand-washing, plus a small area of eczema, and a cold sore, these might all be addressed together, time permitting.
Ultimately, concerns need to be prioritized by both the patient and the doctor to optimize the visit in the safest and most effective manner.