Methods to prevent skin diseases in dogs:

1. Strengthen the dog’s dietary management, choose dog food with high protein content, and also provide the dog with Feed your dog some fresh fruits and vegetables to ensure a balanced diet.

2. Clean the place where the dog lives regularly to ensure that the kennel is clean and tidy. Only when it is clean and tidy will it be less likely to be infected with bacteria and viruses.

3. Make sure the dog's hair is dry. After each bath, wipe it with a towel, and then blow dry with a hair dryer. Wet hair can easily cause the dog's skin resistance to decrease.

4. Dogs should be dewormed internally and externally every once in a while to prevent them from being infected with parasites, which can also cause skin diseases to dogs.

5. Use dog-specific shower gel every time you take a bath. Dog-specific shower gel can effectively sterilize and protect your dog’s skin.