TY - CHAP M1 - Book, Section TI - Allan-Herndon-Dudley Syndrome (AHDS) A1 - Bissonnette, Bruno A1 - Luginbuehl, Igor A1 - Engelhardt, Thomas PY - 2019 T2 - Syndromes: Rapid Recognition and Perioperative Implications, 2e AB - Most affected neonates and infants with this disorder appear to develop normally in the first few months of life; however, the presence of poor muscle tone is most often already present at birth. By the age of 6 months, hypotonia with the inability to hold up the head and severe muscle atrophy become obvious. In addition, severe mental retardation and multiple congenital anomalies are present. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/03/29 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1164061308 ER -