Thehorse.com - Full Article
By Martin Krarup Nielsen, DVM, PhD, Dipl. EVPC
Aug 28, 2015
Q. I have read several articles about scratches this year, and I never see the solution that without fail clears up my horses’ scratches. For my horses, if I deworm a couple of times with ivermectin/praziquantel a week or two apart, their scratches disappear. I don’t have to put any topicals on or scrape them off. I’m wondering why I have never read about this.
A. First of all, scratches is a skin condition of the lower limbs sometimes caused by a pathogen, be it a virus, bacterium, fungus, or parasite. To answer your question it would help to know more about your horses. What type of environment do they live in, and how do these scratches cases present—is there a seasonal occurrence, or do they appear year-round? Where on your horses are they located? What type of horse do you have? This information would help with identifying the most likely explanation. However, here are a few possibilities for why you saw scratches relief after deworming...
Read more here:
http://www.thehorse.com/articles/35714/dewormers-effect-on-scratches?utm_source=Newsletter&utm_medium=lameness&utm_campaign=09-02-2015
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