What is Kawasaki disease? Is it contagious?

Written by Yao Li Qin

Pediatrics

Updated on January 10, 2025

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Kawasaki disease is a common pediatric febrile rash disease, also known as mucocutaneous lymph node syndrome. It is a systemic vasculitis syndrome mediated by immune mechanisms. Kawasaki disease may be caused by acute immune dysregulation due to infectious factors, and genetic factors may be related to the acute onset of the disease. Therefore, Kawasaki disease is not contagious, and contact with children with Kawasaki disease will not lead to transmission. Kawasaki disease generally occurs in infants and young children, and there is no clear seasonal pattern to its occurrence, nor significant gender differences.

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Written by Li Jiao Yan

Neonatology

1min 18sec

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Does Kawasaki disease cause vomiting?

Kawasaki disease is a disease with no clear etiology, commonly seen in infants and toddlers, with eighty percent of cases occurring in children under five years old. Its main pathological change is systemic vasculitis. The main symptoms include fever, congested and cracked lips, diffuse congestion of the oral mucosa, swollen tongue papillae, and strawberry tongue. Other symptoms may include swelling of the hands and feet, polymorphous erythema, and enlarged lymph nodes. There could be subsequent cardiac complications, primarily affecting the coronary arteries. Kawasaki disease may cause vomiting due to the diffuse congestion in the oral cavity, and the pharynx might also be congested. When children experience significant congestion, their laryngeal reflex might be sensitive, possibly leading to vomiting. Furthermore, children with Kawasaki disease might develop secondary infections from other bacteria and viruses, which could also lead to symptoms like vomiting. Therefore, the manifestations of Kawasaki disease can vary, and if significant vomiting occurs, it should be investigated to determine the cause.

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Written by Li Jiao Yan

Neonatology

48sec

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Is IgE high in Kawasaki disease?

Kawasaki disease, also known as mucocutaneous lymph node syndrome, has an unclear pathogenesis. It is speculated that certain components of infectious sources, such as superantigens, can activate CD30 T cells and CD40 ligand expression directly by binding with T cell antigen receptor fragments without going through mononuclear macrophages. Under the induction of carrier cells, there is polyclonal activation and reduced apoptosis of B08 cells, resulting in the production of large amounts of immunoglobulins such as IgG, IgM, IgA, and IgE, and cytokines. Therefore, the IgE levels in Kawasaki disease are elevated.

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Written by Yao Li Qin

Pediatrics

1min 16sec

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How is Kawasaki disease treated?

Kawasaki disease, also known as mucocutaneous lymph node syndrome, can cause damage to the coronary arteries in untreated children, so it is crucial to treat the disease promptly once diagnosed. This disease generally occurs sporadically or in small outbreaks and can occur in any season, predominantly affecting infants and young children. The main treatment for Kawasaki disease is aspirin, which not only reduces fever but also helps reduce coronary artery lesions. Additionally, intravenous immunoglobulin is administered; however, the use of corticosteroids in Kawasaki disease is still somewhat controversial. Other treatments mainly include antiplatelet aggregation agents such as dipyridamole, and symptomatic supportive care for the child, including fluid supplementation, heart protection, control of heart failure, and correction of arrhythmias. For severe coronary artery lesions, coronary artery bypass surgery may be required. (Please use medication under the guidance of a professional physician.)

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Written by Li Jiao Yan

Neonatology

1min 53sec

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What is Kawasaki Disease?

Kawasaki disease was first reported in 1967 by Tomisaku Kawasaki in Japan and is also known as mucocutaneous lymph node syndrome. Approximately 15% to 20% of cases experience coronary artery damage after effective treatment. Since 1970, cases have been reported worldwide, with a higher incidence among Asians. As diagnostic capabilities improve globally, the incidence of this disease is decreasing. This disease occurs sporadically or in small epidemics and can occur in any season, most commonly affecting infants and young children, with 80% of cases occurring in children under five years of age. The cause of the disease is unclear, and the mechanism of onset is also not well understood, with the primary pathological change being systemic vasculitis. The main clinical symptoms are high fever between 39 to 40 degrees Celsius, followed by ineffectiveness of antibiotic treatment, and conjunctival congestion. Other symptoms include congested, cracked lips, diffuse congestion of the oral mucosa, indurative edema of hands and feet with emerging erythema, polymorphous skin eruptions and scarlet fever-like rash, and enlarged cervical lymph nodes, which can be unilateral or bilateral, hard and tender, but not red on the surface. There may be complications involving coronary artery damage, and potential complications such as myocarditis, pericarditis, endocarditis, and arrhythmias. Additionally, there may be other associated symptoms such as interstitial pneumonia, digestive system symptoms, joint pain, and arthritis.

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Written by Li Jiao Yan

Neonatology

1min 43sec

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How many days can Kawasaki disease be cured?

Kawasaki disease is a syndrome of mucocutaneous lymph node syndrome, the cause of which is unclear, as is the pathogenesis of the disease. The pathological changes are mainly systemic vasculitis, which is prone to secondary damage to the coronary arteries. It has a relatively long course. If fever occurs, the fever can persist for 1-2 weeks. Generally, special medications such as aspirin are required for treatment. Usually, treatment is for 3 days, and after the fever subsides, the dosage is gradually reduced, maintained for 6-8 weeks. If there is secondary coronary artery damage, the duration might be longer. In cases of severe coronary damage, the duration of the disease may be several months or even years, depending on the specific condition of the disease. Kawasaki disease is a self-limiting disease. Usually, if there is no significant coronary artery damage, after symptom control, comprehensive examinations are conducted 1 month, 3 months, 6 months, and 1-2 years after discharge, mainly heart examinations such as electrocardiograms and echocardiograms. If there is a combination of coronary artery aneurysms, long-term follow-up is required, with an examination every six months to one year until the coronary aneurysm disappears or if there is combined damage to the coronary artery structure, long-term follow-up is needed.