Hi, my female dog is about 5 years old. She lays outside allot, mostly on the concrete patio. I noticed a month back that she had two spots one on each leg near her elbows, It looks whitish, almost like really dry skin, but the skin is bumpy the hair is thin there. I have been told by family members that they look like Calist spots. But I am kind of worried about it, any idea what these are? Are they common? And is there a way to heal them up? Any info on these spots would be helpful and I will try and get some pictures later today or tomorrow. Thank you.