Diane,
Have you been walking barefoot?Do you have an indoors Pet?Any Medication or using a new Soap/Lotion/Laundry Detergent?How high is your Blood Sugar ATM (at the moment)?
Then I would say it's going barefoot and I would read up on the Medication your taking.The Soles of my Feet become tender and feel rough when I go barefoot,which I do a lot indoors..
Best
Have you asked your Doctor about giving free samples?I know of 1 Diabetes Medication (Actos) that Doctor's get from Pharmaceutical Reps,so there are probably more.Wouldn't hurt to ask!