Mine have never gotten PI and God knows they have walked through plenty. With it being so wet in Central IL, I am thinking more along the lines of rain rot. There are great horse health web sites. See if you can find something that looks similar. Wld be interested in seeing a pic....you can send it to my phone. 309-634-5633 If it is rain rot, a good iodine bath helps or they have special wash at Farm N Fleet or Tractor Supply. LMK |