Common skin disorders in dogs are infections, allergies and parasites, according to the ASPCA. Some skin disorders are acute and easy to treat, while others are chronic and need continuous care.
Skin problems in dogs cause redness or inflammation, constant itchiness, rashes, hot spots of intense itching, and bald spots. They may also cause lesions, draining of pus or blood, scabs, and hair loss, notes the ASPCA. Some dogs might also have dry and flaky skin, skin discoloration, swelling and lumps on the skin.
Diagnosis of canine skin problems includes a physical exam, skin biopsy, allergy tests, ringworm tests, blood tests and microscopic examinations of the hair and skin, according to the ASPCA. These tests look for possible allergies, infections and parasites like ringworm, fleas and mites.
Treatment products are available for fleas and other parasites, while there are prescription-strength shampoos and conditioners for allergic reactions, as the ASPCA explains. Other allergy treatments include eliminating dust mites and mold, feeding a hypoallergenic diet, and keeping the dog from excessive dander and pollen. Dietary supplements with fatty acids are added to food sources as well. There is medication for infections and ringworm, which is a contagious disease caused by a fungus.