Cracked Heel–This is a condition that can be very irritating to the horse and difficult to clear up. It is a form of psoriasis and occurs in the hollow of the pastern. It will be found most frequently in wet, cold weather. Even in horses it is the same as the human condition and is both an autoimmune skin disease and an inflammatory disorder.

Although not proven yet - some horse owner use the UVB Treamtment lamp with good results.