If the dog is caused by parasites, there will be many small black spots or white spots on the skin. At this time, the owner can buy an insect repellent and drop the medicine on the dog's skin to repel insects.
If the dog's skin disease is caused by bacterial infection, there will be many little red dot, erythema or pustules on the dog's skin. At this time, the owner can bathe the dog with a medicated bath and take some antibiotics to enhance the dog's immunity.
If the dog's skin disease is caused by fungi, then the dog will lose its hair and become red and swollen locally. At this time, the owner can apply fungal medicine to the dog two or three times a day. When the symptoms are serious, dogs can take a bath with fungal medicine.
If you don't know what causes dogs, you'd better go to a pet hospital for examination, so that doctors can judge and give a reasonable treatment plan.
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