Melasma is not contagious. Melasma is not a contagious disease. Melasma is mainly caused by the increase of melanin or the increase of melanocyte activity, and it can happen to anyone. Chloasma is a common acquired patchy pigmentation disease, most obvious in zygomatic area and forehead, which is light brown to light black, with smooth surface and clear edge, and the pigmentation changes slightly with the change of seasons and endocrine, without subjective symptoms. Treatment is mainly to avoid sun exposure, oral vitamin C, external use of 3% hydroquinone cream, vitamin A acid cream and so on. Drugs need to be used according to the doctor’s prescription. When you find chloasma, you can go to regular hospitals for consultation, and choose the appropriate treatment under the guidance of professional doctors, do not use medication on your own.