Anaphylaxis is a severe allergic reaction that causes a dangerous drop in blood pressure, according to the Cleveland Clinic. When one goes into anaphylactic shock, it can be life-threatening if not treated immediately.

Jo Frost, known by her TV moniker “Supernanny”, has said she’s been diagnosed with the debilitating health condition anaphylaxis, but is determined not to have the illness “define” her.In a new video shared on Instagram,