The diagnosis of a four-year-old's medical condition Kawasaki Disease via Facebook has gained the attention of the internet community.

A worried mother posted pictures of her son Leo Kogan, whose eyes and chin had swollen. Immediately, pediatrician Facebook friends contacted the mother and helped identify the rare and life-threatening disease, ultimately saving the young boy's life.

What is Kawasaki disease, and what symptoms come with it?

Kawakasi disease is an inflammation of the blood vessels in the arteries, especially the coronary arteries.

Initial symptoms are high fever and bloodshot eyes. The inflammation can also cause an aneurism and lead to a heart attack, which can cause death.

Kawasaki disease affects all ethnic groups, but mostly children of Japanese and Korean descent

John Travolta's 16-year-old son Jett, who died of a seizure in 2009, had been diagnosed with Kawasaki disease at age two.