Seborrheic dermatitis of the scalp is a seborrheic dermatitis that occurs in the scalp area with symptoms such as erythema, flaking, and vesicles. Seborrheic dermatitis may be related to heredity, microbial infections and other factors, and the scalp may show symptoms such as erythema and greasy flakiness accompanied by mild itching. If the symptoms worsen, yellow or brown greasy crusts may appear, accompanied by vesicles, oozing, and may emit an odor. As the condition worsens, it may expand from the scalp to the forehead, behind the ears, etc. It may also involve the arch of the eyebrow and eyelids, leading to diffuse erythema on the face, vesicles behind the ears, scanty eyebrows, blepharitis, and so on. If the above symptoms occur, it is considered to be caused by seborrheic dermatitis, it is recommended to go to a regular hospital and follow the doctor’s instructions for treatment.