Are the "bumpy patches" a result of your anxiety and stress? Perhaps. But they may also be due to any number of things.
If you are concerned your doctor should be able to provide a diagnosis, or refer you to a specialist
more likely describe the red spots as blisters. Localized pockets of infection could also make the leg sore... (used to lower cholesterol). However, dietary supplements containing red yeast rice, the precursor to statins...
You could have contracted scabies, it appears ususally on feet and hands I would contact a dermatologist...you could have contacted a parasite or have a food allergy....if you are using anything new on your skin even laundry