## Overview Bit-related lip injuries are traumatic lesions of the commissures (corners) of the mouth, the bars, or adjacent buccal mucosa caused by pressure or movement of the bit. They range from mild bruising to open ulcers and are common in competition horses. Chronic lesions can lead to depigmentation or scarring at the lip corners. ## Causes Bit design, size, and rider hand pressure are the main factors. Studies show higher lesion rates with very thin or very thick bits, certain curb bits, and in some disciplines or breeds. Poor dental care or sharp enamel points can worsen soft-tissue trauma. ## Diagnosis Visual inspection of the mouth after removing the bit reveals bruising, erosions, or ulcers, most often at the inner lip commissures. Grading systems used in research classify lesions as mild, moderate, or severe. ## Treatment Remove the offending bit, allow rest from bitting, and keep the area clean. Most lesions heal within days to a couple of weeks once pressure is eliminated. Severe or infected wounds may need veterinary attention. Address dental overgrowths and reassess bit fit and rider technique. ## Recovery and Prognosis Prognosis is excellent for soft-tissue healing. Recurrent injury is likely if the same bit and handling continue. Chronic depigmentation may remain as a cosmetic change. ## Prevention Choose an appropriately sized and designed bit, maintain regular dental care, and use light, consistent rein contact. Routine mouth checks after work help detect problems early.
bruising or ulcers at the corners of the mouth; blood on the bit; reluctance to accept the bit; depigmentation of the lip commissures in chronic cases
## Overview Bit-related lip injuries are traumatic lesions of the commissures (corners) of the mouth, the bars, or adjacent buccal mucosa caused by pressure or movement of the bit. They range from mild bruising to open ulcers and are common in competition horses. Chronic lesions can lead to depigmentation or scarring at the lip corners. ## Causes Bit design, size, and rider hand pressure are the main factors. Studies show higher lesion rates with very thin or very thick bits, certain curb bits, and in some disciplines or breeds. Poor dental care or sharp enamel points can worsen soft-tissue trauma. ## Diagnosis Visual inspection of the mouth after removing the bit reveals bruising, erosions, or ulcers, most often at the inner lip commissures. Grading systems used in research classify lesions as mild, moderate, or severe. ## Treatment Remove the offending bit, allow rest from bitting, and keep the area clean. Most lesions heal within days to a couple of weeks once pressure is eliminated. Severe or infected wounds may need veterinary attention. Address dental overgrowths and reassess bit fit and rider technique. ## Recovery and Prognosis Prognosis is excellent for soft-tissue healing. Recurrent injury is likely if the same bit and handling continue. Chronic depigmentation may remain as a cosmetic change. ## Prevention Choose an appropriately sized and designed bit, maintain regular dental care, and use light, consistent rein contact. Routine mouth checks after work help detect problems early.
bruising or ulcers at the corners of the mouth; blood on the bit; reluctance to accept the bit; depigmentation of the lip commissures in chronic cases