My child who has a nut allergy had a couple of immunisations on Wednesday. Today there is a large red mark on one arm - which is growing. It is about 10cm across, so covering one side of their arm. Now a red mark has now appeared on the other, about 10p coin size. They feel fine but I gave a 5ml dose of antihistamine and that hasn't done a thing.
Slightly concerned about this. We do have epipens hence not dashing into anything.