iron deficiency

An example of koilonychia (‘spoon nail’). iweevy/Shutterstock   By Dan Baumgardt, University of Bristol   As a medical student, nails were one part of my anatomy course that I really struggled with. I found it difficult, at first, to stomach the sight of painful nail injuries. My squeamishness may have stemmed from witnessing someone sharply removing a plaster from their stubbed big toe – only to take the whole toenail […]