The darkening of the skin after recovery from eczema is medically known as post-inflammatory hyperpigmentation, which can be treated through general treatment, medication, physical therapy and other means. 1. General treatment: patients with post-inflammatory hyperpigmentation should pay attention to sun protection in daily life, and apply sunscreen or play sunscreen umbrella when traveling, which can effectively avoid further development of the disease. 2. Drug treatment: patients can follow the doctor’s instructions for external use of hydroquinone, deoxy arbutin and other drugs, can effectively inhibit the formation of melanin, improve the situation of hyperpigmentation. You can also take oral tranexamic acid, niacinamide and other drugs to inhibit melanin proliferation and relieve hyperpigmentation. 3. Physical therapy: patients can also choose Nd:YGA laser treatment, using the laser’s photothermal effect to reduce hyperpigmentation. For patients with post-inflammatory hyperpigmentation, it is recommended to go to regular hospitals for examination and cooperate with doctors for standardized treatment.