A bald patch on a cat’s nose without ringworm may be caused by improper diet, malnutrition, or improper care. First of all, we need to improve the cat's diet. We should not feed the cat food with high salt content, otherwise it will cause the cat to shed a lot of hair. At the same time, we need to supplement the cat's nutrition and feed it some egg yolks, fish, lecithin, chicken breast and other foods. Pay attention. For cat hygiene, bathe and deworm the cat regularly. Use cat shower gel for bathing, and blow-dry the cat's hair promptly after washing.