My 12 year old son had a severe allergic reaction which lasted for just over 48 hours, despite 4 hourly doses of Piriton, even throughout the night. He was covered in inflamed, itchy
hives, his lips swelled, his face was swollen & he was mildly short of breath. He also had mild diarrhoea, a headache & a sore throat (possible hives in his throat, as he certainly had them inside his mouth.) He was at school when the reaction started & we do not know what caused it.