Painful skin irritation

The skin around my abdomen, flank, and lower back is extremely painful to movement or touch from my clothing. There is no visible rash. I did recently use a different laundry detergent, but I've used it before without problems.

[MRSF71]

A few years back I was searching around the compuer and found a rare condition. this sounds like my problem. the name of it starts with an h and no it's not herpes on sexually transmitted