If you have winniwinds demi sonna on your feet, you might have a sock issue. Ski boots rub oddly due to the pressure and ridge shape. Winniwinds emi sonna can lead to long term pain and short term rashes. A skiier should try to avoid over tight boots, which can amplify the rate of the rash.
Only you can prevent winniwinds demi sonna and the life time pain caused by it. Please contact your nearest ski profesional for help if you feel you've developed symptoms.