K.N.
My daughter had the same problem except her palms were sweaty too. She had a hard time wearing flip flops...she is only seven. Her pediatrician gave her a presription for Drysol. The first two weeks I put it on her palms and bottom of her feet at bedtime...she can't touch anything for 30 minutes and then I put socks and mittens on her so the Drysol does not rub off. You wash it off in the morning. After the first two weeks, I put it on her 2 to 3 times a week. It is AMAZING!!! She does not sweat anymore! It was sad before we used it because she would not hold hands, go on the monkey bars, etc. I am a big fan of this medicine. I hope this helps! Good luck.
K. N.