Have you heard of this problem with cats?

Having noticed thinning hair on cat between ears and tops of eyes, I chauffeured Milo yet again to Vet’s today. Mange? No. Ringworm? No. What? Male pattern baldness. Vet said that he had the same problem. Hearty laugh from two of the three of us. (Milo threw up in car on trip home.) Comb over? Rug from all that shedding hair. Are cats vain?