Classic Kaposi sarcoma is a type of cancer that primarily affects the skin and mucous membranes. It is characterized by the development of purple, red, or brown lesions that can appear on the legs, feet, or face. This form of Kaposi sarcoma is more common in older adults, particularly men of Mediterranean or Eastern European descent. The condition is linked to human herpesvirus 8 (HHV-8) and is often associated with a weakened immune system. While classic Kaposi sarcoma is generally slow-growing, it can sometimes spread to other organs. Treatment options may include surgery, radiation, or chemotherapy, depending on the severity of the disease.