👉 The term "cyanoderma" is a medical term that refers to a condition in which the skin appears blue or purple due to an overproduction of hemoglobin. It's characterized by the appearance of small, irregular blood vessels on the surface of the skin, often found on the eyelids and around the lips. This condition can be caused by several factors, including genetics, exposure to UV radiation (such as from sunburn), certain medications, or certain health conditions like diabetes or chronic liver disease