What an idiot!!!! Decided to add a brood box underneath the hive.Just finished work so put the bee suit on but thought I'd leave my work shoes on which expose the top of my foot, took a sting and the reaction was like nothing I've experienced before. Within minutes started to have extreme itching on my hands, the back of my head, gradually moving to the rest of my body. My head was beating and my eyes were bloodshot!!!!!I rushed in took an antihistamine and run a cold bath. I had loads of red blotches and felt sicky. Breathing ok though and didn't feel faint. Stupid, got complacent. But a warning I won't ignore. I've been saying the one hive is a bit feisty, a queen from a swarm last year, but we were messing with the hive so at the moment I'll give them the benefit of the doubt.