About Solar Dermatitis in Dogs
Solar dermatitis, also known as "Collie Nose", is a skin condition that occurs primarily in dogs with prolonged exposure to the sun. It most commonly affects short-coated dogs with white fur and non-pigmented skin. The condition usually occurs on areas of the body with sparse fur like the abdomen, hind legs and nose. The symptoms of solar dermatitis can easily mimic other canine skin diseases, so it's important to see your veterinarian and get a firm diagnosis.
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Symptoms
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Initial signs of solar dermatitis are scaly, red skin and hair loss. As the condition progresses, your dog's skin will thicken and develop plaques, red bumps and nodules which can become crusty and ulcerated.
Diagnosis
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Your veterinarian will first perform screening tests to rule out other skin disorders. She will then do a biopsy to confirm a diagnosis of solar dermatitis.
Prognosis
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If caught early, progression of solar dermatitis can be stopped by avoiding further sun exposure. In more advanced cases, your dog is at risk for developing skin cancer, tumors and other serious skin diseases.
Treatment
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Your dog must avoid further sun exposure, and if he must go outside, use sunscreen. Depending on the progression of the disease, further treatment may include anti-inflammatories, antibiotics, oral retinoids, lesion removal and, if cancer has occurred, surgery and radiation.
Prevention
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The only way to prevent solar dermatitis is to protect your dog from prolonged and excessive sun exposure.
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