The disturbed puberty is most frequently manifested by a retardation of sexual maturation and growth. For a correct classification of a developmental disturbance the knowledge of the endocrine processes, of the stages of puberty, tables of height and methods of the assessment of the skeletal maturity is necessary, the use of which for the population of the GDR is discussed. The large differential diagnosis of the delayed puberty and of the short stature must be above all concentrated to the causal-therapeutically influencible endocrinopathies, even though the proportion of the constitutional delayed puberty as an extreme variant of the norm with a good spontaneous prognosis prevails. In order to prevent serious psychosocial conflicts, after transgression of a critical age limit of about 16 years in sexual immaturity an adequate hormone treatment should be introduced even then, when the etiopathogenesis of the disturbance could not be completely clarified.