Dull skin with spots may be the manifestation of melasma, freckles, post-inflammatory hyperpigmentation and other diseases. 1. Melasma: the etiology is complex, genetic susceptibility, ultraviolet radiation, and changes in sex hormone level are important pathogenic factors. There will be yellow-brown pigmentation spots on the face, which will be aggravated under sunlight irradiation, thus manifesting as dark skin with spots. 2. Freckles: Scattered brown spots, appearing on the nose and cheeks and other exposed parts, symmetrically distributed, related to genetic factors, aggravated by sunlight, resulting in the manifestation of dull skin with spots. 3. Post-inflammatory hyperpigmentation: hyperpigmentation spots vary from light brown, purple brown to dark black, which are skin pigmentation that occurs after acute or chronic inflammatory process, and patients have symptoms of dull skin with spots. There are many reasons for skin pigmentation, so it is recommended that patients go to the hospital to clarify the cause of the disease and follow the doctor’s instructions.