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Sick boy with thermometer laying in bed and mother hand taking temperature. Mother checking temperature of her sick son who has thermometer in his mouth. Sick child with fever and illness while resting in bed.

Multisystem Inflammatory Syndrome in Children (MIS-C) is a rare but serious illness where a child’s body parts can become inflamed, including the heart, lungs, kidneys, brain, skin, eyes or gastrointestinal organs, such as the stomach or intestines.

While the Centers for Disease Control and Prevention (CDC) do not yet know what causes MIS-C, many children diagnosed with MIS-C recently had been sick with COVID-19 or had been around someone with COVID-19. To date, there have been three cases of MIS-C in Washington.

MIS-C can be serious, even deadly. Most children recover when they receive proper care, however, so it is important that children who may have this illness be seen by a doctor as soon as possible.

Symptoms of this condition include:

  • Abdominal pain
  • Bloodshot eyes
  • Feeling extra tired
  • Fever
  • Diarrhea
  • Neck pain
  • Rash
  • Vomiting

Not all children with MIS-C have the same symptoms, and these symptoms may be caused by other illnesses or conditions. However it is important that you contact your child’s doctor, nurse or clinic right away if your child is showing these symptoms so they can be diagnosed and treated.

Seek emergency care right away if your child is showing any of these emergency warning signs of MIS-C or other concerning signs:

  • Bluish lips or face
  • Inability to wake or stay awake
  • New confusion
  • Pain or pressure in the chest that does not go away
  • Severe abdominal pain
  • Trouble breathing

Doctors may do certain tests to look for inflammation or other signs of disease. These tests might include blood tests, chest x-rays and a heart or abdominal ultrasound.

Doctors may provide supportive care for symptoms (medicine and/or fluids to make your child feel better) and may use various medicines to treat inflammation. Most children who become ill with MIS-C will need to be treated in the hospital.

Call Mary Bridge Children’s Hospital immediately if you have concerns. MultiCare has precautions in place to ensure that patient and visitors are safe.

MIS-C is not contagious. However, it may be related to COVID-19, it’s important to take precautions to help limit your child’s exposure to COVID-19, which is contagious. Implement common safety precautions, such as handwashing, social distancing and avoiding those that are sick, to protect your child against both COVID-19 and MIS-C.