Understanding Diathermy Treatment for Xanthelasma Xanthelasma are benign, cholesterol-filled deposits that appear as yellowish bumps on the skin, typically around the eyelids. While they are not harmful, many people seek treatment for cosmetic reasons, hoping to reduce their appearance. Diathermy, a method that I use in my clinics uses high-frequency electrical currents to target and shrink tissue, I find this to be extremely effective and a fairly quick form of treatment. However the effectiveness of diathermy for xanthelasma’s can vary depending on factors such as the size, location, and depth of the deposits. Diathermy works by applying controlled heat to the affected area, which breaks down the fatty deposits. The