Patients with lung cancer may experience side effects such as itchy skin during the application of targeted drugs ERSA or Troche. Severe itching or even breakouts may occur. Need to stop the drug. Glycerin can be applied, toner: Ingredients: Recipe 1: (coarse black skin) vinegar: glycerin = 2:1 mixture, often applied to the skin, 2-3 times a day, can make the skin moist, reduce melanin deposits, a month after the skin that delicate white, clean, smooth and elastic, full of beauty. Recipe 2: (dry and itchy skin) white vinegar: glycerin 4:1 mix, while the pores are open after washing or bathing, when the skin is not dry, apply on the skin, it has good effect. Recipe 3: Super moisturizing recipe white vinegar + glycerin + one or two astragalus, this recipe is very moisturizing and a little sticky, so you can apply skin cream after use without it, this recipe is suitable for night use. However, it is generally not necessary to take Chinese herbal medicine during the period of taking ERSA, because some Chinese herbal medicines may interfere with the therapeutic effect of ERSA.