Weird skin rash. Unusual for me

I have been on MJ for 9 months and occasionally get a red reaction at the injection site. I I jwcgws on Thursday and last night the injection site felt really itchy. I scratched it and now it looks like this. Ka this something to worry about? 😳

It is intermittently itchy when I'm hot.

I have been on MJ for 9 months and occasionally get a red reaction at the injection site. I I jwcgws on Thursday and last night the injection site felt really itchy. I scratched it and now it looks like this. Ka this something to worry about? 😳

It is intermittently itchy when I'm hot.