My horse got this strange skin condition two months ago and it took a month to cure. Now, he developed it again. I don't know what it is and what to do. Previously, as it looked like a kind of blister which was full of pus - we decided to squeeze it because it was growing and growing... It was very painful for him. Then we sterilised the skin with Rivanol. It started to cure.
Today, it occured within a few hours with pus coming out. He was very sensitive and didn't want it to be touched. I am worried because it is the second time and maybe it is something dangerous?
I thought it could be an insect bite but now I am not sure. What do you think?
Should I continue to squezze it? Can it be a sarcoid?