A few days ago, my best friend’s baby had a fever for 1 week, and not only did the fever not go down, but also conjunctival congestion, chapped lips, and rash, after calling the local children’s hospital for advice, the doctor diagnosed Kawasaki disease, and soon recovered from the hospital after targeted treatment. What kind of disease is Kawasaki disease? Kawasaki disease is an acute febrile rash pediatric disease with systemic vasculitis as the main lesion. It can develop in both infants and children, with most affected children within 5 years of age, and is more common in babies 6-18 months. The exact cause of Kawasaki disease is still unclear. What kind of fever should I look for in Kawasaki disease? Fever in Kawasaki disease is often unpredictable, with sudden onset of fever, mostly for 7 to 10 days, often reaching a maximum temperature of 39 to 39.9°C. During the course of the fever, the baby’s conjunctiva is often congested bilaterally, the lips are flushed and then chapped and bleeding, some babies have a prune-like tongue, the palms of the hands and soles of the feet appear flushed and hard edema early on, and about 10 days later, large flakes of skin may appear at the ends of the fingers and toes, and a polymorphic red rash appears on the trunk, especially on the perineum, or an urticaria-like rash with itching, but without blisters or The rash may be urticaria-like, with itching, but without blisters or crusts. There is also transient swelling of the cervical lymph nodes, mostly unilateral, with slight tenderness, usually within 3 days of the onset of fever. What are the negative consequences of Kawasaki disease? Some children with Kawasaki disease may have multiple organ damage, including heart, brain, liver, lung, and kidney damage, with cardiovascular damage being the most prominent. Coronary artery dilation can be detected early on echocardiography, with coronary artery aneurysms measured as early as day 6 of onset, with the highest detection rate in weeks 2-3, and can last for months to years. Most of the aneurysms may subside within 1-2 years, but in severe cases, they may lead to thrombosis, luminal narrowing and occlusion, or even myocardial infarction, and may lead to severe cardiac ischemic symptoms or ischemic heart disease, which is the main cause of death in Kawasaki disease. Therefore, babies with Kawasaki disease need regular follow-up cardiac ultrasound and oral aspirin until the coronary vessels return to normal before stopping the drug. Therefore, if your child develops fever with rash, mucous membrane damage and swollen lymph nodes, do not take it lightly and take your child to the hospital in time to ensure his or her health.