The most important symptom of seborrheic alopecia in men is crowning. There are two main types of seborrheic alopecia, one is a rounded or circular extension from the top of the head, and the other is called M-shaped, where the M-shaped alopecia is from the sides of the hairline upwards, creating the appearance of an upward shift in the hairline. In addition, there is also a male scalp with a lot of oil, found in addition to greasy scalp, may also appear flaking, some may appear a certain degree of scalp itching symptoms.