if your fingers and heels crack be sure to keep an eye on your blood sugar after meals. I always tested normal but had cracked fingers and heels sometimes. The doctors always were saying use lotion etc., but guess what, I was pre-diabetic and didn't know it, and the tests weren't picking it up - yet. Since I got my blood sugar under control the cracking stopped, no more need for lotion. Just saying it can point to an underlying illness that hasn't been diagnosed yet. If they had caught it in my 20's or 30's, which is when it started, it could have been controlled solely with diet my whole life - I am 71 now. I was able to control it for about 15 years once we found it, but the damage caused in those early years catches up because it kills pancreas cells every time it is too high. Simple test is 120 - 130 or lower 2 - 3 hours after eating a meal with heavy carbs.