Yes, a vet trip is definitely in order. My orangie Creamsicle was losing a lot of hair. It's been determined that she has allergies although we don't know what she's allergic to. (Testing is expensive! Plus my vet said we may never make a determination.) She's on Medrol now and that keeps her hair loss to a minimum. It's a steroid so she has gained weight but I have her on diet food and that's helped a lot. Good luck and keep us posted.