× Veterinary advice should be sought before applying any treatment or vaccine. Scratches
Pastern Dermatitis, Mud Fever, Mud Rash, Cracked Heels, Dew Poisoning, Greasy Heel, Bacterial Dermatitis
Pastern dermatitis is a collective term for an intractable, painful, exudative dermatitis affecting the back of the hose's pasterns. It is most frequently found on the non-pigmented (white-skinned) areas.
There are three different forms of pastern dermatitis with the mildest form the most common.
Mild form: Matted hair, minor swelling, scaling and crusting of skin Exudative: Skin redness, skin erosion, hair loss, serous to purulent crusting of skin, vasculitis Chronic Form: excessive granulation tissue (fibroblastic proliferation) that becomes cornified, nodular proliferations of hypereratosis and lichenification, painful lesions, lameness
When pulled away, hair pulls with it
History Clinical signs Physical exam Skin surface cytology Skin scrapings Dermatophyte culture
Therapies Details Management Avoid turning horse out before the morning dew has dried Keep horse's legs clean and dry during wet weather conditions Avoid turning horse out in muddy, wet, or sandy pastures Keep lower leg hairs short by periodically clipping Topical Therapies Scrub legs with antibacterial shampoo (active ingredients include benzoyl peroxide (3%), chlorhexidine (2%) and ethyl lactate), applied daily for 7 to 10 days, then 2 to 3 times weekly. A topical ointment containing 2% mupirocin for Dermatophilus or staphylococcal bacterial infections Apply a padded, water-repellant bandage changed every 1 to 2 days. Cases of exudative lesions, astringent solutions such as lime sulfur (4 to 6 oz/gal) or aluminum acetate solution. Enilconazole Lime sulfur dips and sprays Miconazole shampoo Selenium sulfide Triamcinolone Hydrocortisone Alclometasone diproprionate Trimethoprim-sulfamethoxazole Enrofloxacin Fluconazole Griseofulvin powder Itraconazole Ketoconazole Betamethasone valerate (1%) Dexamethasone Prednisolone Pntoxifylline
Changing the horse's turnout schedule so that they aren't outside during dew formation in the early morning Regularly drying off legs with a towel after baths Maintaining pastures so that grass is not excessively long and/or any photosensitivity causing weeds are not present Minimizing prolonged exposure to muddy conditions or wet bedding Keep lower leg hairs short by clipping
Kim A. Sprayberry, N. Edward Robinson Robinsons Current Therapy in Equine Medicine, 7th Edition Elsevier Health Sciences. 2015 David R. Hodgson, Catherine McGowan, & Kenneth McKeever The Athletic Horse, 2nd Edition Elsevier Health Sciences. 2014 McAuliffe, S. B Knottenbelt and Pascoes Color Atlas of Diseases and Disorders of the Horse Elsevier Health Sciences. 2014 Mair, T., Love, S., Schumacher, J., Smith, R. K., & Frazer, G Equine medicine, surgery and reproduction Elsevier Health Sciences.. 2013 Hinchcliff, K. W., Kaneps, A. J., & Geor, R. J. Equine sports medicine and surgery .