Dad books appointment for dermatologist

We have to get Dad to the doctor to check out his scalp for the spots he has on there (his pic does not include the growths because....we'll, they aren't fun to look at)  Nevertheless I'm going to take him to the appointment on June 8th to see what's up?  He doesn't think anyone should bother about it, but we want to make sure it's nothing serious at this stage.