Answer: "Collie nose" is used to describe a condition in which breeds with little or no pigment on their face develop lesions, usually on the nose, eyelids and lips. The lesions are caused by a hypersensitivity to sunlight. Despite the term "Collie nose", breeds other than Collies can also be affected, especially Shetland Sheepdogs. Collie nose has an inherited component and is worse in areas with sunny climates.Collie nose can be managed several ways. Exposure to sunlight should be kept to a minimum. Sunscreen lotions help, but have limited effectiveness due to a dog's licking behavior. In some cases the treatment of choice is tattooing. A permanent black ink is tattooed into the affected areas. The black ink serves as a shield against sunlight. It is best if young dogs with lightly pigmented noses, as a preventative, are tattooed before any lesions develop.