Dorsal Interosseus Midfoot Compression Syndrome (ToFP|DMICS) is a very common problem in runners who adopt a forefoot strike. It's actually quite simple to treat when you understand it, yet so often it becomes an persistent problem. On forums dedicated to minimalist footwear, you often see it mentioned. https://medicalreleasesonline.info/managing-top-of-foot-pain-in-forefoot-strikers/