Hair loss is actually a very common pathological phenomenon, and in dermatology we always encounter a variety of patients with hair loss. The fact that they can come to the clinic indicates that they have recognized hair loss as a disease, but there are more patients with hair loss who are still expecting to relieve their symptoms through non-pharmaceutical treatments, and I recently saw a patient with hair loss in his 20s who had typical male pattern baldness, also known as seborrheic alopecia, or This is also known as seborrheic alopecia, which is commonly referred to as alopecia areata and early baldness. The incidence of this type of hair loss is actually very high, accounting for 20% of all men, or one in five men suffering from male pattern baldness. The incidence of male pattern baldness increases with age and is higher after middle age, but in recent years the disease has been developing at a younger age. 20-30 year old men are the main force behind male pattern baldness, with the fastest development around the age of 30. The patient’s hair was thinning at the top of his head, but the surrounding hair was coarse, hard and black, and he said he had been to many businesses claiming to raise hair in the society, but none of them had obvious and lasting effects. Through careful observation of the hair microscope, it was found that only a few hairs in the patient’s hair loss area were black, while the rest had no pigmentation and were very small hairs, which is an obvious manifestation of male pattern baldness. Male pattern baldness can be divided into seven levels. At the beginning, many people may not think that the hair is falling out; but in the second to fifth level, the hair line on the forehead will be “M” and keep moving backward; and the scope of hair loss on the top of the head will also gradually expand. At the sixth to seventh level, it is called “Mediterranean” hair loss. It is important to note that many people think that hair loss is temporary and may be curbed by improving sleep or increasing nutrition, but I want to tell you that male pattern baldness is not temporary, it is progressive. The trend is to lose more and more hair, and only when they feel they can’t wait any longer do they finally find the courage to come to the doctor, which is likely to delay the treatment and affect the results. Two-thirds of male pattern baldness is related to genetics, simply put, the patient’s scalp locally contains a large amount of dihydrotestosterone (an androgen), dihydrotestosterone acts on hair follicles, causing them to atrophy and degenerate, shortening the growth period of hair, increasing the proportion of resting hair, resulting in a progressive decline in hair density and diameter, forming hair loss. Since male pattern baldness is a progressive aggravating process, it is important to treat it as early as possible. Many patients mistakenly believe that the problem can be solved simply by rest or dietary adjustments, or even by changing shampoos, not knowing that the hair loss process will become more and more severe if they are not seen in a timely manner. Therefore, the treatment of male pattern baldness should be started early, and the earlier it is started, the better the results.