For the scars left by prickly heat, usually belongs to post-inflammatory hyperpigmentation, often patients can choose temporary observation, drug intervention, physical therapy and other ways to eliminate. 1. Temporary observation: Because the inflammatory hyperpigmentation phenomenon has a slow onset, some patients may subside on their own, because it does not affect their health, so there is no need for special treatment, and you can wait for it to heal on its own. 2. Pharmacological intervention: for localized hyperpigmentation, drugs that promote epidermal renewal can be used, such as vitamin A cream, etc. Drugs that inhibit melanin deposition, such as hydroquinone cream, etc., can also be used. 3. Physical therapy: for localized hyperpigmentation, it can be handled by laser, which can lighten localized hyperpigmentation and alleviate the symptoms through selective photothermal effect. It is recommended that patients usually do a good job of sun protection, if you feel the impact on aesthetics, can be standardized treatment as soon as possible. The above drugs need to be used in accordance with medical advice.