Complications of Kawasaki Disease

Overview

Kawasaki disease is an illness that causes inflammation in the walls of blood vessels throughout the body, mostly affecting children under the age of five. It often leads to a high fever, rash, swollen hands and feet, red eyes, and cracked lips. If untreated, it can lead to complications such as:

  • Coronary Artery Abnormalities (CAAs): The inflammation caused by KD can affect the coronary arteries, which supply blood to the heart, leading to abnormalities like aneurysms (bulging) or stenosis (narrowing). These changes can increase the risk of blood clots and heart problems.
  • Early diagnosis and treatment with IVIG (intravenous immunoglobulin) and aspirin are key to preventing these issues. Children who have had KD, especially those with coronary artery abnormalities (CAAs), need regular follow-up care to monitor heart health.
  • If CAAs are found, treatment may include medications to prevent blood clots, or procedures like balloon angioplasty or surgery to fix the arteries.
  • Coronary artery stenosis and myocardial infarction: Narrowing of the coronary arteries can cause decreased blood flow to the heart muscle and possible heart attack. Long term monitoring with echocardiograms and electrocardiograms may be recommended.
  • Abnormal heart rhythms: After the acute phase of the illness, some patients may develop abnormal heart rhythms that can require treatment with antiarrhythmic medications.
  • Myocarditis: KD can cause inflammation of the heart muscle, known as myocarditis. This can lead to symptoms such as chest pain, shortness of breath, and abnormal heart rhythms.
  • Early diagnosis and prompt treatment of KD are essential in preventing complications like myocarditis.
  • Treatment involves managing symptoms and providing supportive care. Medications may be prescribed to reduce inflammation and relieve symptoms. In severe cases, hospitalization and specialized cardiac care may be necessary.
  • Kawasaki Disease Shock Syndrome (KDSS): In rare cases, children with KD may develop KDSS, a severe form of the disease characterized by shock and organ failure.
  • Early recognition and treatment of KD are crucial in preventing the progression to KDSS. Close monitoring of vital signs is important during the acute phase of KD.
  • Treatment involves aggressive fluid resuscitation and administration of IVIG. Additional therapies such as corticosteroids or other immune-modulating medications may be used in severe cases.

It's important to note that while these complications can occur with KD, not all children will experience them. Prompt diagnosis, early treatment with IVIG and aspirin, and regular follow-up care can help minimize the risk of complications and improve outcomes for children with Kawasaki Disease.

Remember to always consult a healthcare professional for personalized advice and guidance regarding your child's health.

What are the signs that my child might be developing coronary artery abnormalities due to Kawasaki Disease?

How can we prevent or manage myocarditis if my child has Kawasaki Disease?

What are the symptoms of Kawasaki Disease Shock Syndrome and how is it treated?