We've been back from Majorca a week and DP's bites have mostly cleared up except this one. I've only just seen it but it alarmed me slightly because mine are all gone or very faint blotches.
Dp has a chest infection and sore throat/headache which he picked up on holiday a few days in and this bite happened around the same time as Far as he can recall. He's on his second lot of antibiotics since getting home as the first lot didn't work. He feels otherwise fine apart from the chest issue and has no temperature.