Thelitis is an acute inflammation of one or more teats that leads to ulceration, necrosis, obstruction, and sloughing of the affected teats. Pure exotic breeds are highly susceptible, followed by crossbred animals and buffaloes. Photosensitive thelitis is a local manifestation of generalized photosensitization. It is characterized by erythema and hardness of the unpigmented or white parts of the lateral aspects of each teat. Ulcerative thelitis is an obstacle to the milk-producing capacity of cattle and buffaloes.…