I have no idea what to call this and, I'm posting here purely because of my Pm - scl 100 antibody, but I have developed weird hard, scaly, rough patches of skin in the 'sit bones' area where my bum cheeks meet my hips. Both sides. I'm not overweight nor am I really thin, (low but normal bmi) I do not sit all the time, don't ride a bike but I swim and do daily exercises. These patches are not red or itchy but are beginning to 'split'. I've always had quite dry skin and typically moisturise after every shower and swimming and this works well and have never gad any issues.
The only info online refers to pressure ulcers, mainly for people who are bedbound and very ill or dying. One thing I read mentioned muscle loss in the buttocks.
Anyway, does anyone here have anything similar?
I'm on hydroxychloroquine abd methotrexate for connective tissue disease and Inflammatory Arthritis. I eat well!
Help needed
New here! 
New looking for advice pls 
Diagnosed with Polymyostis 
