My mother would never allow us to scratch insect bites. Her father had died,when she was just ten, as a consequence of doing so, although I'm not sure of the exact details. His brother was still maintaining, even when I was little that it was the local doctors fault for not taking it seriously when the bite/sting first started presenting as a problem. Grandad ended up being taken to hospital where he died.
Anyway he was a working class entrepreneur type and had just started a business that was going well. After his death Granny had a really tough time bringing up my mother and aunt on her own.
But damn and blast it I could have been brought up middle class if it wasn't for that bloody little bitey/stingy bastard. Plus I could have had the pleasure of not feeling guitly for having a good scratch after being attacked by various little creatures