A misshapen hoof where the hoof wall deviates outwards in the lower third giving it a concave look. From the solar aspect, the area with the deviation will have a widening of the white line. The flare is usually in the quarters, may affect both the inner and/or the outer hoof wall and is usually seen in horses with a medio-lateral imbalance. Flaring of the toe area is most commonly seen in horses with neglected hooves.