A guide to the hormones in different areas of the curriculum and links to careers in endocrinology.

Endocrine conditions

Klinefelter's syndrome

Klinefelter's syndrome is a genetic condition affecting boys and men that occurs as a result of the presence of one or more extra X chromosomes. The condition is typically characterised by tall stature, reduced fertility and development of breast tissue, although some patients have no clinical features other than reduced or absent sperm count.

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Hormones in the news