I don't know how old you are, but you should check your blood sugar. Of course, even if your blood sugar is high, you don't have to take medicine to lower your blood sugar, just to judge whether there is something wrong with your liver or kidney.
Second, oral ulcers may be in a bad mood recently, and the liver fire is too strong. Mouth ulcers, combined with breath and thin body, indicate that you may have a bad stomach. Just drink a cup of light salt water in the morning, you don't need to drink too much. If you feel that your stomach is not good, you can drink burdock tea, Poria tea, and herbal tea that can strengthen the spleen and nourish the stomach.
Keratinization of skin is a personal skin problem, which can be solved by buying some cosmetics, and it has nothing to do with hiding in the body.
As for athlete's foot, tinea manuum, pneumonia, paronychia and drug allergy, they are all personal health and hygiene conditions. You should go to the hospital to take medicine according to the doctor's advice and keep healthy.
I hope I can help you.