Alopecia areata, commonly known as "ghost shaving," has an unknown cause and its onset mechanism is related to the immune system. Factors such as fatigue, anxiety, nervousness, and lack of sleep can all trigger this condition, and it requires supportive symptomatic treatment such as immune modulation. Oral administration of L-cysteine tablets, vitamin B6 tablets, and compound glycyrrhizin tablets, along with topical application of 5% minoxidil spray in the affected area, as well as chondroitin sulfate polysulfate cream or pimecrolimus cream, combined with physical therapy measures like helium-neon laser irradiation, are recommended. It is also important to rest, consume dark-colored foods including black sesame, black fungus, and black rice, and maintain a good emotional state. (Note: The use of medications should be under the guidance of a physician.)