[RISK FACTORS AND CLINICAL PECULIARITIES OF SECONDARY OLIGOMENORRHEA IN ADOLESCENT GIRLS].

Risk factors related to secondary oligomenorrhea (SOM) are the presence of chronic extragenital pathology, abrupt changes in body mass during a short period of time, a burdened perinatal history at the onset of SOM after a year of regular menstruations. Adolescent girls with SOM differ from their healthy peers by a frequent occurrence of hirsutism, obesity and body mass deficit, uterine hypoplasia.