Under-eye spots may be caused by seborrheic keratosis, freckles and chloasma. 1. Seborrheic keratosis: its causes may be due to skin aging, heredity and gene mutation, etc. Patients will have spots, flat papules and plaques of different sizes, which are commonly found on the head, face and neck, etc. Freckles: its causes may be related to heredity and light exposure, etc. Patients will have round or ovoid spots. 2. Freckles: the cause of freckles may be related to heredity, light and other factors, and the patients will have round, ovoid or irregularly shaped spots, ranging from light brown to dark brown, which are common on the face and the back of the hands. 3. Chloasma: the cause of the disease may be heredity, sun exposure, changes in sex hormone level and other factors, patients mostly have yellowish-brown pigmentation spots on the face, which are symmetrically distributed. There are many reasons leading to under-eye spots, and it is suggested that patients should consult doctors for examination to clarify the causes.