What Is The Name Of An Itch At The Groin

What is the name of an itch at the groin that does not show any visible signs of a rash but it is really itchy at the same time. Plus, the same itch at the anus with no visible signs of a rash? I got the itch at the groin from sweating and not showering for like 5 days plus, I got the itch at the anus from wiping too many times with rough napkins and water without washing for days after days. Now, I've got the itch at my groin for like 10 years and the itch at my anus for about 3 years and there seems that no cream that the doctor prescribes for me can heal me from the invisible itch.