Kaposi's sarcoma is a cancer that originates from a blood vessel. When a person experiences Kaposi's sarcoma, the skin will look patches or small lumps of red or purplish to resemble a bruised skin color. Kaposi's sarcoma is a rare type of cancer that arises due to human herpesvirus 8 (HHV8) infection. This virus attacks cells that line the channels and lymph nodes and / or blood vessels. In most people, this viral infection does not cause symptoms or cause Kaposi's sarcoma. This cancer is usually found in people with low immune system, such as people with HIV or people who use immune system suppressants (immunosuppressants), so they are vulnerable to infection. Symptoms of Kaposi's Sarcoma The main symptom of Kaposi's sarcoma is the appearance of red or purple patches on the skin or in the mouth. These patches are almost similar to bruises and are painless. In some cases, Kaposi's sarcoma can appear as a lump in red or purplish. If it has spread to ot...