School-age children may be diagnosed if they are referred to a doctor to evaluate learning disabilities.
[genome.gov]
Learning disability; delayed speech development; behavioural problems; psychosocial disturbances.
[patient.info]
Learning Disabilities Research and Practice, 19(3), 166–173. Bojesen, A., Juul, S., Birkebaek, N., & Gravholt, C. H. (2004). Increased mortality in Klinefelter syndrome.
[nichd.nih.gov]