The diagnosis of seborrheic alopecia is mainly based on the clinical symptoms of seborrheic alopecia. Most patients with seborrheic alopecia exhibit hair loss on the top of the head, as well as the gradual upward movement of the hairline. In terms of appearance, patients with seborrheic alopecia have a significantly oily scalp, which means that the patient’s head is very oily, while the patient’s hair is thin and soft. Laboratory tests generally show that the testosterone level in the patient’s blood is significantly over the limit. So the manifestations of seborrheic alopecia are actually comprehensive and need to be treated with caution.