Is it normal

That like the top of my butt crack (wow that sounds stupid to say) is itchy all the time. And sore.

It’s been like this for as long as I can remember.

Plus when I have sex and my bf grabs my ass it nearly feels like the skin is ripping

I know I’ve itched it before and saw blood

Edit

lotion stings like all hell. And there’s nothing there if I look at all