<prompt> Cryptomenorrhea occurs due to:Imperforate hymenAshermans syndromeMullerian agenesisAll  <response>: Ans. is a, i.e. Imperforate hymenRef: Dutta Gynae 6thed, p450; Shaw 15thed, p96-97 Cryptomenorrhea is defined as occurrence of menstrual symptoms without external bleeding. Menstrual blood fails to come out from genital tract due to obstruction in the outflow passage. Causes:CongenitalAcquiredImperforate hymen commonestTransverse vaginal septumAtresia of upper third vagina cervixCervical stenosis following: Amputation Cauterization Conization Radium treatment for malignant conditions 