Generally, hair loss at the top of the head can be reversible. Sudden hair loss on the scalp may indicate alopecia areata, which typically has a clear boundary and reveals shiny patches of skin without pain or itching. This condition is often related to high mental stress and poor sleep. Treatment can include oral administration of Compound Glycyrrhizin Capsules and L-cysteine tablets, or a combination of traditional Chinese medicine diagnosis and treatment. Additionally, products like Yangxue Shengfa Capsules can be used, as well as topical solutions such as Minoxidil Solution or Compound Siyadan Hair Growth Solution, which can gradually restore hair. If the hair loss at the top of the head is androgenic alopecia, this usually requires combination with certain medications. For women, oral spironolactone can be used; for men, oral finasteride may be helpful. (Medication should be used under the guidance of a doctor.)