A sudden increase in dandruff like snowflakes is usually a case of scalp furuncle, which can be given general treatment with medication. Scalp flakes will easily increase, and when scratched, they will fall like snowflakes, accompanied by itching and other symptoms. Usually, you should pay attention to the regular routine, light diet, avoid the use of irritating shampoo and so on. Scalp chaffing usually has a large number of ovoid chaffing spores, can use imidazole drug treatment, including topical ketoconazole cream or miconazole acetate cream and so on. It can also be treated with medications such as selenium disulfide lotion, coal tar, and salicylic acid. If the phenomenon of excessive dandruff occurs, you should go to the hospital in time for examination, and you should follow the doctor’s instructions when using the above drugs.