The dog's nose, commonly known as the truffle, is one of the most important areas of its anatomy, providing valuable information about its state of mind and health. For this reason, we must keep an eye on any changes that may occur in the area, such as the discoloration or depigmentation. We tell you the causes that cause this phenomenon.
Natural causes
Sometimes the dog has a natural depigmentation on his nose from birth, a kind of "spotty" coloration common in breeds such as the pit bull, the border collie or the Australian shepherd. It takes place exclusively due to genetic factors, although the nose can change color according to different weather conditions; for example, it tends to take on lighter shades in winter, due to reduced sunlight. All this does not pose any problem for the health of the animal.
Uveodermatologic syndrome
It's a autoimmune disorder whose symptoms include ocular inflammation, skin irritations in the perianal area, scrotum, vulva and pads, and depigmentation of the nose. It requires an immediate diagnosis, for which the veterinarian will perform tests such as blood and urine tests, biopsy, hemogram or antinuclear antibody test.
Dudley nose
This is how you know a genetic abnormality which produces the only symptom of discoloration of the nose. It is presented in a progressive way, making the entire truffle turn pink. It does not carry serious risks to the health of the animal, although this area becomes more vulnerable to possible sunburn.
Systemic lupus erythematosus
It consists of a autoimmune disease which can lead to polyarthritis, hemolytic anemia and skin alterations, among which is the depigmentation of the nose. All of this is often accompanied by fever, weakness, and difficulty walking. Its diagnosis includes tests of different characteristics, such as laboratory tests, biopsies and antibody tests. It requires immediate veterinary attention.
Other causes
There are other reasons that favor the discoloration of the truffle, such as:
- Lack of vitamin B.
- Allergy. It is possible that something with which the dog has frequent contact, such as the feeder, causes an allergy. This reaction to plastic is common, so it is much more advisable to use metal plates.
- Aging.
- Sunburn. Some dogs are especially susceptible to the sun's rays, and the truffle area is continuously exposed to them. To protect it, it is best to apply a special sunscreen for dogs before each walk.