Dysmenorrhea Flashcards
DDX of secondary amenorrhea
With hyperandrogegism
- PCOS
- antonomus hyperandrogegism (androgen secretion independent of HPO axis) can be ovarian tour, hyperthecosis, adrenal androgen-secreting tumour.
- late onset or mild cognital adrenal hyperplasia
Without hyperandrogegism
- increase gonadotrophin(↑ FSH) and decrease gonodism (↓E). 3 types Idiopathic, autoimmune (T1DM, Addison’s or thyroid), Iatrogenic (radiation or cyclophosphamide)
- Hyperprolactinemia
- Endocrinopathies - most common ↑or↓ thyroid
- Hypogonadotrophic hypogonadism
- Functional hypothalamic - most common - amenorrhea often related to stress, excessive exercise +/or anorexia
Causes of hypogonadotrophic hypogonadism
Pituitary compression or destruction Pituitary adenoma, craniopharoma? Lymphocytic hypophysitis, infiltration Head injury Sheehan's syndrome
Types of amenorrhea
Primary amenorrhea
Secondary amenorrhoea
Oligomenorrhea
Define primary amenorrhea
No menses by age 13 in the absence of 2° sexual characteristics or no menses by age 15 with 2° sexual characteristics or no menses 2 yrs after thelarche
Define secondary amenorrhea
No menses for >6 m or 3 cycle after documented menarche.
Define oligomenorrhea
episodic vaginal bleeding occurring at internals >35 days
DDX of primary amenorrhea and 2° sexual development
Normal breast and pelvic development - Hypothyroidism - hyperprolactinemia - PCOS - Hypothalamic dysfunction Normal breast and abnormal uterine development - Androgen insensitivity - Anatomic abnormality eg mullerian genesis, uterovaginal septum, Imperforate hymen.
DDX of primary amenorrhea and without 2° sexual development
↑FSH (hypergonadotrophic/ ↓gonadism
- Gonada dysgenesis - abnormal sex chromosome eg Turner’s, Noral sex chromosome
↓FSH (↓gonadtrophic, ↓gonadis)
- constitutional delay - most common. Can be due to Congenital abnormality such as isolated GnRH deficiency, pituitary failure e.g. Kallman syndrome, Head injury, pituitary adenoma. Can also be acquired such as endocrine disorders e.g. T1DM, Pituitary tumour, systemic disorder e.g. IBD, JRA, Chronic infection
What work up for a patient with amenorrhoea
BhcG
Hormonal work up - TSH, Prolactin, FSH, LH, Androgens, Estradiol
Progesterone challenge to assess E status
if withdrawal bleed = adequate E. If no withdrawal bleed = inadequate E or excessive androgens or progesterone
Karyotype if premature ovarian failure or absent puberty
USS to confirm normal anatomy and ID PCOS.
Mx of primary amenorrhea caused by androgen insensitivity syndrome
Gonadal resection after puberty,
Psychological counselling
creation of neo vagina
Mx of primary amenorrhea caused by Anatomical abnormalities e.g. imperforate yen, cervical agenesis, transverse vaginal septum
Surgical management
Mx of primary amenorrhea caused by mullein dysgenesis
Psychological counselling
creation of neovagina with dilation
diagnosis study to confirm normal urinary system and spine.
Mx of secondary amenorrhea caused by uterine defect e.g. Asherman’s syndrome
Evolution with hypersalpingography or sonohysterography.
Hysteroscopy excision of synechiae
Mx of secondary amenorrhea caused by HP acts dysfunction
ID modifiable underlying cause
COCP to ↓ risk osteoporosis, maintain normal vaginal and breast development (not proven)
Mx of secondary amenorrhea caused by premature ovarian failure
Screen for DM, ↓thyroid, ↓PTH, ↓corticolism.
Hormonal therapy with E and P to reduce risk of osteoporosis - OCP
Mx of secondary amenorrhea caused by hyperprolactinemia
MRI/CT if neg Bromocriptine, cabergolin if fertility wanted += surgery