I have 2 cats, a male & a female. We noticed that the male had a "itchy" spot above his tail that when you touched it he would start licking you, the air, whatever he could reach. Then we noticed he started losing fur there. Now my female is acting the same way when you touch her in that spot. They are both 100% indoor cats, we haven't changed their food or litter, or anything else we can think of. They do not have fleas, and my 3 dogs are not showing any symptoms. Any ideas?