My dog has athletes tongue, can anyone tell me how to help him?

More seriously, I have hot feet so wearing safety boots all day leaves my feet in a constant state of mushroom cultivation. A daily wash with anti-dandruff shampoo works wonders, better than the creams and powders, once my feet are thoroughly dry I moisturise the area with E45 cream to stop cracking and itching. I do this daily in summer, maybe twice a week in winter.