He can progress by Jump-roping, running(same as Jogging almost), swimming and bicycling, Aerobic's and Aerobic Dance, and At-Home exercises.
Chondrodermatitis nodularis helicis is an inflammatory skin condition that affects the ear. It causes a painful bump to develop on the top rim or helix of the ear or the curved piece of cartilage just inside, known as the antihelix. The condition, abbreviated to CNH, is also known as Winkler disease.
A, seek advice from others about the situation.
