Two patient journey articles this week describe the struggle to find what Jocelyn Anne Silvester calls “the most powerful tool that doctors have – a diagnosis.” She diagnosed her own coeliac disease during a biochemistry lesson after years of ill health and investigation that labelled her a “heartsink” patient (doi:10.1136/bmj.b380). Henry Willis was nearly 4 years old when his coeliac disease was diagnosed, by which time he was severely anaemic, unwell, and undersized (doi:10.1136/bmj.a3066). Despite a family history of coeliac disease his parents struggled to convince doctors that anything was wrong. Now 11 years old and the second tallest in his class, he describes …