Kawasaki Disease

Is Kawasaki disease contagious, and could other family members catch it?

• No. Kawasaki disease is not contagious and does not spread from person to person. It is believed to result from an abnormal immune response in a susceptible child, possibly triggered by an infection, rather than being an infection itself that can be transmitted.

How urgent is it to see a doctor if my child has had a fever for several days?

• Very urgent. Because the risk of coronary artery damage is directly linked to how quickly treatment starts, a fever lasting more than three to five days in a young child — especially alongside rash, red eyes, or changes in the lips and tongue — warrants prompt medical evaluation rather than a wait-and-see approach.

Will my child have permanent heart damage from Kawasaki disease?

• Most children who receive treatment within the first ten days of illness do not develop lasting coronary artery problems. The children at highest risk of permanent changes are those who are diagnosed late or who develop larger aneurysms, which is why early treatment is so strongly emphasized.

Can Kawasaki disease come back after my child recovers?

• Recurrence is uncommon but does happen in a small percentage of children. Because of this, families are advised to seek prompt evaluation if a fever pattern similar to the original illness reappears, even after a full initial recovery.