Symptoms of dog dermatitis:

1. Symptoms of fungal epidermatitis: hair loss on the affected area, local white powdery scabs, and red skin under and around the scabs protuberance.

2. Contact dermatitis: Symptoms such as erythema, papules, blisters, scabs and desquamation appear in the affected area.

3. Symptoms of solar dermatitis: erythema, hair loss, fluid exudation, ulcers and scab formation may occur on the dog’s nose, eyelids and lips.

4. Hookworm dermatitis: There are erythema, swelling and hair loss, and the dog will feel pain and uneasiness when touching the affected area.

Causes of dog dermatitis:

1. Traumatic dermatitis caused by scratching, scratching, burns, sunburns, contusions, abrasions, etc. caused by dogs.

2. Dermatitis caused by daily irritation, such as irritating shower gel, frequent bathing, etc.

3. If the dog lacks nutrients such as vitamin B and minerals, it will be more susceptible to dermatitis, causing roughness, dullness and even severe hair loss.