Baby eczema ?

Brianica • Mama to my sweet little Armani💙 24 years young ❣️

So my son is almost 2. His entire torso, stomach and back, have become super rough over the past few weeks. It started as a few dry spots and has now become the entire area. I’ve been using baby eczema lotion but it doesn’t seem to be helping at all. I thought maybe it was from laundry detergent but it’s literally just his torso. His legs and arms and everything else is completely normal so I’m not sure if it’s that. It’s not bothering him but I still want to try and fix it obviously. Does anyone have any tips? He has a check up soon so if I can’t resolve it at home I’ll definitely ask his dr at that time.