07/30/2025
The term "fat leg" is pretty self-explanatory, but do you know the difference between stocking up and cellulitis?
Many horses will "stock up" with subcutaneous edema (fluid swelling) in two or more legs (usually the hind limbs). Stocking up generally results from a significant decrease in exercise and usually resolves as the horse starts exercising again.
Lymphangitis (or vasculitis, big leg disease, staph infection, or cellulitis), however, is a bacterial infection and a dramatically different condition. While its causes may vary, it’s easy to spot once it sets in. The swelling will be extreme, hot, very painful to the touch, and the horse will be depressed due to the fever and discomfort.
If you think your equine friend has cellulitis or even if you're not sure, we encourage you to seek professional help promptly. Your equine practitioner will make the best treatment recommendations, both to reduce swelling and to address any sort of bacterial infection that might be active or that could occur due to the edema in the soft tissue.
