Medicine available depends on the type and depth of skin color and patch.... Do direct online consultation  by sending photos, otherwise meet me at my clinic, for accurate diagnosis and treatment

Dark circles are a common problem but the cause for its occurrence has to be determined. Most of the times, it's genetic that is it runs in the family. But inadequate sleep, nutritional deficiency or working on laptop for long hours can also cause this. Please get your hemoglobin checked. Creams can be tried, which are specially made for treating pigmentation on this area. Chemical peels are also another option. Please use a sunscreen. You can call me or contact me through online consult option for detailed prescription and all other precaution to be taken.,