Hi, my daughter had her pre school booster on Tuesday. On Friday evening she started developing a rash all over her body. On Saturday it had turned into a hives type rash and was really aggressive. We went to the walk in centre and they said it was just a reaction to the vaccine. They gave us anti histamine drops and said it would go away. It got worse overnight and included swelling of the hands feet and lips. Did anyone else experience this and how long did it last for. She has absolutely no other symptoms but a rash so aggressive is obviously very worrying. Thank you for any experiences you may have had