RT Book, Section
A1 Fitzgerald, Paul A.
A2 Papadakis, Maxine A.
A2 McPhee, Stephen J.
A2 Rabow, Michael W.
A2 McQuaid, Kenneth R.
SR Print(0)
ID 1184698226
T1 Primary Amenorrhea
T2 Current Medical Diagnosis & Treatment 2022
YR 2022
FD 2022
PB McGraw-Hill Education
PP New York, NY
SN 9781264269389
LK accessmedicine.mhmedical.com/content.aspx?aid=1184698226
RD 2024/04/19
AB Menarche  ordinarily  occurs  between  ages  11  and  15  years  (average  in  the  United  States:  12.7  years)  (see  also  Chapter  18).  The  failure  of  any  menses  to  appear  is  termed  “primary  amenorrhea,”  and  evaluation  is  commenced  either  (1)  at  age  14  years  if  neither  menarche  nor  any  breast  development  has  occurred  or  if  height  is  in  the  lowest  3%  for  ethnicity,  or  (2)  at  age  16  years  if  menarche  has  not  occurred.