Flat feet could be congenital (ie you are born with it) or can acquire after some time. Most who are afflicted with flat feet have no signs or symptoms and regular foot function. But for Other individuals it causes pain and irritation. The heel pain is often a stabbing pain https://www.theorthopaedicandpainpractice.com/treating-foot-arch-pain-with-modern-orthopaedic-pain-management-techniques/