Men with long-term dark circles under the eyes may be kidney deficiency, but there are more reasons for the formation of dark circles under the eyes. Western medicine mostly believes that long-term dark circles under the eyes are related to abnormal metabolism around the eyes, while Chinese medicine believes that long-term dark circles under the eyes are mostly caused by kidney deficiency. When dark circles appear in clinical practice, they are generally considered to be caused by slow metabolism and poor blood flow in the eyes, resulting in inflammatory reactions and pigmentation. Long-term overuse of the eyes and insufficient rest can lead to dark circles under the eyes, not necessarily a sign of disease. According to Chinese medicine, the kidney is water, and a kidney deficiency can lead to a flooding of water, which can lead to dark circles under the eyes. However, kidney deficiency is usually accompanied by other symptoms, including frequent weakness of the waist and knees, sleepiness, insomnia at night, excessive dreaming and night sweats. When diagnosing kidney deficiency, the above symptoms should be combined with the above symptoms, and the dark circles under the eyes alone cannot make a clear diagnosis. When men have long-term dark circles under the eyes, it is recommended to first adjust the lifestyle, avoid staying up late and get enough sleep. If there is no relief, you can visit the dermatology department or Chinese medicine department of the hospital.