Secondary amenorrhoea is where an established menstruation has ceased—for three months in a woman with a history of ...AmenorrheaFromWikipedia,thefreeencyclopediaJumptonavigationJumptosearchAbsenceofamenstrualperiodinawomanofreproductiveageMedicalconditionAmenorrheaOthernamesAmenorrhea,amenorrhœaSpecialtyGynecologyAmenorrheaistheabsenceofamenstrualperiodinawomanofreproductiveage.[1]Physiologicalstatesofamenorrhoeaareseen,mostcommonly,duringpregnancyandlactation(breastfeeding),thelatteralsoformingthebasisofaformofcontraceptionknownasthelactationalamenorrhoeamethod.Outsidethereproductiveyears,thereisabsenceofmensesduringchildhoodandaftermenopause.Amenorrhoeaisasymptomwithmanypotentialcauses.[2]Primaryamenorrheaisdefinedasanabsenceofsecondarysexualcharacteristicsbyage14withnomenarcheornormalsecondarysexualcharacteristicsbutnomenarcheby16yearsofage.Itmaybecausedbydevelopmentalproblems,suchasthecongenitalabsenceoftheuterus,failureoftheovarytoreceiveormaintaineggcells,ordelayinpubertaldevelopment.[3]Secondaryamenorrhoea(menstrualcyclesceasing)isoftencausedbyhormonaldisturbancesfromthehypothalamusandthepituitarygland,fromprematuremenopauseorintrauterinescarformation.Itisdefinedastheabsenceofmensesforthreemonthsinawomanwithpreviouslynormalmenstruation,orsixmonthsforwomenwithahistoryofoligomenorrhoea.[4]Anotherpotentialcauseforamenorrheaisinthepresenceofasevereeatingdisorder,likeanorexianervosa,characterizedbyfoodrestrictionandbeingunderweight.66–85%ofpatientswithanorexianervosapresentamenorrheaasasymptom.[5][6]Contents1Classification2Cause2.1Lowbodyweight2.2Drug-induced2.3Breastfeeding2.4Celiacdisease2.5Physical2.6Stress3Diagnosis3.1Primaryamenorrhoea3.2Secondaryamenorrhea4Treatments5History6Etymology7References8ExternallinksClassification[edit]Therearetwoprimarywaystoclassifyamenorrhoea.Typesofamenorrhoeaareclassifiedasprimaryorsecondary,orbasedonfunctional"compartments".[7]Thelatterclassificationrelatestothehormonalstateofthepatientthathypo-,eu-,orhypergonadotropic(whereb