There are times when black spots on the skin are a normal occurrence, states Petfinder.com. These spots can usually be found in areas with constant friction, such as under the legs. However, black lesions on the skin can be a symptom of allergies. It is only a problem if the dog is bothered by the area in question.
Petfinder.com also states that black spots are normal for aging dogs. Fleas are not a culprit in black spotting, since parasites usually cause hair loss on the animal. A reaction from major allergies can develop, most likely stemming from a problem called lichenification, in which black spots are itchy and rough in appearance, similar to elephant skin.
According to WebMD.com, dogs can also get what is known as fly-bite dermatitis, where the dog is bitten around the floppy portion of the ears, resulting in black scabbing from bleeding. Red spots are also an indicator of insect bites.
EarthClinic.com notes that if there is no physical disruption in the under-surface of the skin, then it is nothing to worry about. However, if the dog exhibits irritation and hair loss, special creams or ointments can be applied, or a trip to a veterinarian is in order.Learn More
Cat World explains that black spots that appear in a cat's mouth are caused by an increase in the number of melanocytes, or pigment producing cells. This harmless condition is commonly called "orange cat lentigo" due to its frequency of occurrence in orange, cream, yellow, and silver-colored cats. Typically occurring before the age of 1, these spots increase in size and frequency as a cat ages.Full Answer >
Hot spots are treated with a combination of anti-inflammatory drugs, antibiotics, pain medications and Elizabethan collars to prevent further damage to the skin. They are moist skin lesions that develop when a dog scratches, rubs, licks or otherwise traumatizes its skin in response to an itch, says PetMD.Full Answer >
Conditions like genetic or autoimmune skin, keratin trapped beneath the skin and injury cause milk spots. Healthline explains that milk spots, also known as milia, usually accompany some type of skin damage including blistering injuries like poison ivy; burns; long-term sun damage; long-term use of steroid creams; skin-surfacing procedures, like dermabrasion or laser resurfacing; and skin conditions, like bullous pemphigoid, epidermolysis bullosa and porphyria cutanea that cause blistering.Full Answer >
According to WebMD, white spots on the leg may be due to skin issues such as vitiligo, a condition characterized by the development of white patches on the skin. Other potential causes are idiopathic guttate hypomelanosis, also called white age spots, along with tinea versicolor, or skin depigmentation, caused by a fungus.Full Answer >