posting here for traffic...
DD (14) was stung by a wasp 2 weeks ago. She always reacts badly to stings, and her arm swelled up. Went to GP and got antibiotics. Took them for a week and the sting went down, no mark left.
Yesterday it came back up - same place, same sting, not a new one - red and sore and hot again. Have given her piriton;
Why would it do this? Is the infection still there? Does it need another trip to the GP? She's now got a UTI so is on ABs for that. but is otherwise well - ie no temperature.