Hello and Welcome!
Ear infections can be tricky. Be sure to clean ears every week and after every swim. There are a variety of solutions used by the members here. You can use the search feature at the top of the page to find them. I hesitate to try to remember them all and get something wrong. Have not had to deal with skin infection. What type of infection is it, i.e., what is the cause? Is it bacterial, yeast?
Sending good thoughts.