How is the dog's armpit red and swollen with pimples?

The redness and swelling under the armpit of dogs may be skin diseases caused by many reasons. The most common cause is skin infection, which may be caused by bacteria, fungi and parasites, especially in high humidity environment, these pathogens are more likely to grow and reproduce.

In addition, there are some other causes of skin problems, such as allergic reactions, parasitic infections, hereditary diseases and so on. It may also cause redness and bumps under the dog's armpits.

It is recommended to take the dog to the veterinary clinic for examination as soon as possible and treat the disease after diagnosis. Pay attention to keep the dog clean during the treatment, comb and bathe the dog regularly, keep the environment clean and avoid the breeding of bacteria, fungi and parasites.