👉 Melanodermia, also known as melanin pigmentary disorders, is a group of skin conditions that involve an abnormal accumulation or overproduction of melanin pigment in the skin. These conditions can affect various parts of the body and can include areas such as the face, neck, legs, and hands. The specific cause of these conditions is not fully understood, but it is thought to be caused by a combination of genetic factors, environmental factors, and lifestyle choices. Melanodermia