My horse got an abscess two weeks ago. They're super common this time of year in the Pacific NW as everything is muddy and gross; there were at least 6 other horses in my barn that got them as well. I was still very worried when the barn called me to tell me that my horse was three-legged lame
Luckily my horse's abscess cleared itself pretty quickly. I did an epsom salt soak and then an epsom salt poultice overnight... it had blown by the time I got there the next day and my horse was much happier. He was still a little off for the next week or so, so I continued doing soaks and limited him to indoor turnout only.