Fluke can cause these bumps on the noses. Check for resistance for the flukicides you use. Up here farmers have been fluking their sheep at least every 4 weeks in some areas.
Oh my gods really?? I never knew that.
My girls have had this, but now it is on the mend.
I fluked them about a month ago and that is when it started to improve. I never put 2 and 2 together