RT Book, Section A1 Weinberg, Samuel A1 Prose, Neil S. A1 Kristal, Leonard SR Print(0) ID 6988981 T1 Section 26. Disorders of Nails and Hair T2 Color Atlas of Pediatric Dermatology, 4e YR 2008 FD 2008 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-145543-5 LK accesspediatrics.mhmedical.com/content.aspx?aid=6988981 RD 2024/04/25 AB Increased curvature of the nail plate may be due to a wide variety of causes. In this patient, the large, convex nails are a hereditary anomaly and were found to be present in both father and brother. Other causes of clubbing of the nails in children include cyanotic congenital heart disease, cystic fibrosis, and chronic inflammatory bowel disease.