Cat Licking Bald Spot. Parasites:fleas, mites, lice, and ticks can make them scratch and lick, too, causing bald spots and even sores. For the rest, i suggest the reason is toxicity.
Fungal infections, mites, fleas, and stress are other causes. Hair loss above a cat's eyes (facial alopecia) commonly occurs as cats grow in size and their fur thins out. 1 these symptoms will also.