Paediatricsniche
A 14-year-old boy is brought in by both parents, who are worried that he is the shortest in his year and has not started to change. His height has followed the 10th centile since he was five and his weight the 15th. He has no chronic illness, no headaches and a normal sense of smell. Each testis measures 5 mL by orchidometer and the scrotal skin is thin and reddened. There is no pubic or axillary hair and the penis is prepubertal in size. Which one of the following is the most appropriate management?