Mucocutaneous Lymph Node Syndrome is commonly referred to as Kawasaki disease. It is a rare but potentially serious illness that inflames blood vessels throughout the body, with a particular focus on those that supply blood to the heart. This disease is known for the characteristic signs of fever, rash, swollen lymph glands, and irritability. It is also sometimes referred to as Kawasaki syndrome, lymph node syndrome, and mucocutaneous lymph node disease. While the cause of Kawasaki disease remains unknown, early diagnosis and treatment are crucial to managing the symptoms and reducing the risk of complications, especially those that may affect the heart.