I have achy skin; The best way for me to discribe the pain would be like when you have the flu and your skin hurts to touch. It hurts when wearing clothing or sitting (since the pain usually hits my back side). It usually appears in my lower extremities (buttocks and down the back of my upper leg). It will hang around for 2 to 3 days and either go away or move to the other side of my body, first time I had this.