Severely cracked heels can be caused by diabetes too. In such cases, I always draw the guest’s attention to the need for a health check-up, because treatment of it is very important. Diabetes has serious complications and was a fatal disease before the invention of insulin. Wounds are also difficult to heal in diabetics and can easily develop into ulcers, tissue necrosis and amputation. In the case of vascular stenosis and diabetes, I use a dry pedicure with a dust-suction pedicure machine to prevent any damage.