^^^^^^^
I wondered how long it would be before Will Fly landed here.
;)    ;)    ;)   

NZ sand flies !!!!! The bites seemed fairly innocuous on day one then overnight drove me crazy and lasted days!!

My dad was forever telling us "DON'T SCRATCH. IT MAKES IT WORSE!".
One day I got three very similar bites and marked round them with a biro.
One I scratched all over when the need arose.
One I scratched but not the centre.
One I studiously ignored.
Dad was right. I still find it nearly impossible to resist though.
I do find the amonia\afterbite pen is helpful in reducing the urge to scratch.