Thanks for writing to us.
These red rashes could be due to contact dermatitis
which is occuring due to your socks. Right now to treat the same, use a good moisturiser over affected area along with steroid
cream like mometasone
cream. Also change your socks and wear cotton socks. Make it a point to wash your socks in a mild detergent. The socks that you wear shouldnt be too tight as that can also irritate the skin.
Hope this helped