WASHINGTON ( NorthDakotaMonitor )— U.S. Department of Homeland Security Secretary Kristi Noem Tuesday was taken to a D.C.-area hospital after having an allergic reaction, a DHS spokesperson said.

Homeland Security Secretary Kristi Noem was transported by ambulance on Tuesday to a hospital in Washington, D.C., two sources familiar with the matter told CNN.

Allergic reactions occur when the immune system overreacts to harmless substances like pollen, food, or medicine, triggering symptoms that range from mild to severe.