Causes of dog skin allergies:
1. Dogs may eat some food that can cause allergies, leading to food-induced allergic dermatitis.

2. It may also be because the summer sun is fierce and ultraviolet rays are strong, and the dog's hair is shaved, causing sunburn and skin allergies.

3. It is also possible that external parasites cause skin allergies in dogs.

Solutions to dog skin allergies:

1. If it is caused by food allergies, change their eating habits and eat specially formulated dog food.

2. If it is caused by sun exposure, you can use some skin repair drugs appropriately on the dog, and then take proper care of the dog.

3. If it is caused by external parasites, the dog must be dewormed promptly and regularly.