Multisystem inflammatory syndrome in children (MIS-C) is a rare but serious complication that can occur in children who have been infected with COVID-19. The exact cause of MIS-C is not fully understood, but it is thought to be related to an overactive immune response triggered by the virus. MIS-C typically occurs 2-4 weeks after a child has been infected with COVID-19, although it can also occur in children who have been exposed to the virus without developing symptoms.
The condition is characterized by inflammation in multiple organs, including the heart, lungs, kidneys, brain, and digestive system. Symptoms of MIS-C can be severe and may include fever, abdominal pain, vomiting, diarrhea, rash, and red eyes. Children with MIS-C may also experience cardiac dysfunction, such as low blood pressure, rapid or abnormal heart rhythms, and heart muscle inflammation.
MIS-C is a serious condition that requires immediate medical attention. Treatment typically involves hospitalization and supportive care, including intravenous fluids, medications to manage inflammation and fever, and in some cases, mechanical ventilation or extracorporeal membrane oxygenation (ECMO) to support heart and lung function.