Age spots on the back of the hands, i.e. seborrheic keratosis, are usually caused by skin aging, sun exposure and other factors. It only affects aesthetics and does not cause any other harm, so it usually does not need to be treated. If there is a related need for beauty, it can be treated with medication, or through freezing or laser. Seborrheic keratosis is a degenerative change of the skin caused by natural aging, sun damage, heredity, etc. It usually only affects the patient’s aesthetics, and is not harmful to the body, so it usually does not need to be treated. Patients who have related needs for aesthetics can be treated with medication, laser, cryotherapy, etc. However, the treatment does not slow down the aging process of the skin, and new rashes may gradually appear on other parts of the body. Seborrheic keratosis can be removed by using laser or freezing to necroticize the age spot tissue of the skin. If you are diagnosed with seborrheic keratosis, follow your doctor’s instructions and do not self-medicate.