Context Functional hypothalamic amenorrhea (HA) is a common, acquired form of
hypogonadotropic hypogonadism that occurs in the setting of energy deficits and/or stress …

Background Functional hypothalamic amenorrhea is a reversible form of gonadotropin-
releasing hormone (GnRH) deficiency commonly triggered by stressors such as excessive …

FHA is a form of Hypogonadotropic Hypogonadism (HH) in which anovulation and estrogen
deficiency are expressed by inadequate endometrial growth, absence of menstruation, and …

Functional hypothalamic amenorrhea (FHA) is a temporary infertility characterized by the
suppression of the hypothalamic–pituitary–gonadal (HPG) axis, induced by the inhibition of …

Context After completion of puberty a subset of men experience functional
hypogonadotropic hypogonadism (FHH) secondary to excessive exercise or weight loss …

Introduction Normosmic isolated hypogonadotropic hypogonadism (nIHH) is a clinically and
genetically heterogeneous disorder. Deleterious variants in over 50 genes have been …

Research question Premature ovarian insufficiency (POI) is characterised by amenorrhea
associated with elevated follicle stimulating hormone (FSH) under the age of 40 years and …

Congenital hypogonadotrophic hypogonadism (CHH) is a challenging inherited endocrine
disorder characterised by absent or incomplete pubertal development and infertility as a …

Congenital hypogonadotropic hypogonadism (CHH) is caused by dysfunction of
hypothalamic gonadotropic-releasing hormone (GnRH) axis. The condition is both clinically …

Background Idiopathic hypogonadotropic hypogonadism (IHH) is a rare genetic disease
attributed to the disorder of hypothalamic-pituitary-gonadal axis. Mutations in the GNRHR …