Secondary amenorrhea is the absence of menstrual periods for 6 months in a woman who had previously been regular. Common causes include pregnancy, thyroid disorders, hyperprolactinemia, medications, and functional hypothalamic amenorrhea due to conditions like anorexia. Evaluation involves testing for pregnancy and checking hormone levels like TSH, FSH, LH and prolactin. Further tests may include a progesterone challenge, ultrasound, or MRI if pituitary or ovarian issues are suspected. Treatment depends on the underlying cause but may involve hormone therapy, lifestyle changes, fertility treatments or surgery.
Benign ovarian masses include functional cysts and tumors; most are asymptomatic.Most functional cysts and benign tumors are asymptomatic. Sometimes they cause menstrual abnormalities. Hemorrhagic corpus luteum cysts may cause pain or signs of peritonitis, particularly when they rupture. Occasionally, severe abdominal pain results from adnexal torsion of a cyst or mass, usually > 4 cm. Treatment varies depending on the patient's reproductive status.
Benign ovarian masses include functional cysts and tumors; most are asymptomatic.Most functional cysts and benign tumors are asymptomatic. Sometimes they cause menstrual abnormalities. Hemorrhagic corpus luteum cysts may cause pain or signs of peritonitis, particularly when they rupture. Occasionally, severe abdominal pain results from adnexal torsion of a cyst or mass, usually > 4 cm. Treatment varies depending on the patient's reproductive status.
Menstrual irregularities are the problems with a girl's normal monthly menses. For example, missed periods, have them too frequently, having painful periods, or have excessively heavy flow. Menstrual irregularities can sometimes be a sign of an underlying health problem.
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5. z
AMENORRHEA
A patient is diagnosed with primary
amenorrhea if she has not reached
menarche by age 16 with normal secondary
sexual characteristics.
Secondary amenorrhea if established
menses have ceased for longer than 6
months without any physiological reasons.
PATHOLOGICAL AMENORRHEA
7. z
Secondary Amenorrhea
- Physiological -
The most common cause of secondary
amenorrhea in reproductive age women is
pregnancy and this should always be
excluded by physical exam and laboratory
testing for the pregnancy hormone - HCG.
11. z
HYPOTHALAMIC CAUSES
Secondary Amenorrhea
- ETIOLOGY -
Hypothalamic dysfunction is a common cause
(30%).
It is more often seen as a result of stress, weight
loss
and eating disorders
It may be due to tumour, infarction,
thrombosis or
inflammation.
12. z
PITUITARY CAUSES
Secondary Amenorrhea
- ETIOLOGY -
Pituitary failure - It is usually the acquired type
as the result of trauma, treatment of pituitary
tumour or
infarction after massive blood loss (
Sheehan’s syndrome )
Pituitary tumour hyperprolactinaemia which
cause secondary amenorrhea.
13. z
ENDOCRINE CAUSES
Secondary Amenorrhea
- ETIOLOGY -
Thyroid disorder and Cushing’s disease
interfere with the normal functioning of the
hypothalamic -pituitary – ovarian axis present
with amenorrhea.
High level of thyroxine inhibit FSH release.
Androgen – secreting tumours of the ovaries
cause secondary amenorrhea.
14. z
ANATOMICAL CAUSES
Secondary Amenorrhea
- ETIOLOGY -
Usually due to previous surgery.
Commonest example:
1). Hysterectomy
2). Endometrial ablation
3). Asherman’s syndrome (damage to
the endometrium with adhesion formation)
4). Stenosis of the cervix following
cone biopsy
15. z
1-Uterine defect
Asherman`s syndrome
This is intrauterine synechiae
*withdrawal beeding after hormonal test is negative
*history of D&C after delivery or termination of pregnancy
other causes-TB or schistosomiasis
*normal ovulatory cycle & premenstrual symptoms
evaluated by HSG & transvaginal US
TREATMENT
*hysteroscopic treatment with excision of synechiae
*mainaining of seperation of uterine walls by insertion of a
large inert IUCD such as a Lippes loop
The result of treatment are often disappointing in term of
subsequent fertility
16. z
PREMATURE OVARIAN FAILURE
Secondary Amenorrhea
- ETIOLOGY -
Premature ovarian failure occurs in
about 1% before
the age of 40.
Premature ovarian failure may be due to:
1). Chemotherapy and radiotherapy.
2). Autoimmune disease following
viral infection
3). Following surgery for conditions
such as
endometriosis
17. z
2-Premature ovarian failure
Ovarian failure before 40 years
Ovarian failure before 30 years may be due to chromosomal disorders -
Karyotyping is done to check for mosaicism ( some cells have Y chromosme)
gonadectomy is indicated to prevent malignant transformation
Other causes of premature ovarian failure
Ovarian injury from surgery, radiation or chemotherapy, galactocaemia
&autoimmunity
Investigations
FBS for diabetes
Free thyroxine, TSH for hypothyroidism
Serum calcium for hypoparathyroidism
Fasting morning cortisol
Treatment of premature ovarian failure
By hormone therapy (estrogen & progesterone)
18. z
DRUGS CAUSING HYPERPROLACTINAEMIA
Secondary Amenorrhea
- ETIOLOGY -
Hyperprolactinaemia accounts for
20% of cases of amenorrhea.
Prolactin inhibits GnRH release from
the hypothalamus
Drugs may cause
hyperprolactinaemia:
19. z
3-Amenorrhea with hyperprolactinaemia
Galactorrhea is the most frequently observed
abnormalities associated with hyperprolactinemia
TSH should be tested for hypothyroidism
drug use a CT or MRI scan of sella turcica should be
performed
Drugs that may cause hyperprolactinaemia includes
1-tranqulizers
2-antidepressants
3-antihypertensives
4-narcotics
5-metaclopramide
20. z
Mechanisms that produce Prolactin
1 - Normally dopamine suppresses prolactin production.
If a mass compresses the stalk of the pituitary, the
dopamine feedback pathway is interrupted and it can no
longer inhibit prolactin prolactin levels. Also,GnRH
will not be able to pass through and there will be LH and
FSH. If there is prolactin and LH & FSH
there may be E2 (Estradiol) levels - consider hormone
replacement therapy.
2 - Hyperprolactinemia may also be caused by psychoactive
drugs which suppress dopamine.
3 - Prolactin secreting adenomas produce excess prolactin
levels
21. z
Treatment of Hyperprolactinemia
Dopamine agonist therapy -
(Cabegolin,Bromocriptine) - most common. With drug
induced hyperprolactinemia, bromocriptine may
counter the effects of the anti-depressent medications.
Macroadenoma-transphenoidal resection may be
done. This will result in resumption of ovulation for
40% of patients.
Response to radiation can be very slow.
If a patient has a microadenoma or other causes of
hyperprolactinemia, OCPsmay be used
Goals of Treatment: regulate menses, prevent
endometrial hyperplasia, induce ovulation for
pregnancy, improve hirsutism (excessive body hair in a
masculine pattern of distribution due to hereditary or
hormonal factors.)
22. z
POLYCYSTIC OVARIAN SYNDROME (PCOS)
Secondary Amenorrhea
- ETIOLOGY -
PCOS accounts for 90% of cases of
oligoamenorrhea
Also known as Stein-Leventhal syndrome
The etiology is probably related to insulin
resistance,
with a failure of normal follicular development
and
ovulation
The classical picture – AMENORRHEA, OBESE,
SUBINFERTILITY and HIRSUITISM
24. z
History
A good history can reveal the etiologic
diagnosis in up to 85% of cases of
amenorrhea.
ASSESSMENT
25. z
Hot flashes , decreased libido premature menopause
Certain medications
Weight change A large amount of weight loss (anorexia
nervosa)
Associate symptoms - Cushing's disease , hypothyroidism
Contraception
Previous gynaecological surgery
CLINICAL ASSESSMENT
- HISTORY -
ASK ABOUT
Menstrual cycle age of menarche and previous menstrual
history
Previous pregnancies - severe PPH (Sheehan’s syndrome)
Chronic illness
26. z
Secondary sexual characteristic
ANDROGEN EXCESS hirsuitism (PCOS) – virilization (tumour)
Abdominal (haemato mera) and pelvic masses (ovarian tumour)
Breast examination may revealed galactorrhea,
Inspection of genitalia cervical stenosis
CLINICAL ASSESSMENT
- EXAMINATION -
CHECK FOR
BODY MASS INDEX (BMI) weight loss-related amenorrhea
BLOOD PRESSURE elevated in Cushing and PCOS
27. z
If the history and physical exam are
suggestive of a certain etiology
The workup can sometimes be more
directed
CLINICAL ASSESSMENT
- INVESTIGATIONS -
28. z
Some patients will not demonstrate any
obvious etiology for their amenorrhea on
history and physical examination
These patients can be worked up in a
logical manner using a stepwise
approach.
CLINICAL ASSESSMENT
- INVESTIGATIONS -
29. z
INVESTIGATING
SECONDARY AMENORRHEA
The most common cause of secondary
amenorrhea in reproductive age women is
pregnancy and this should always be
excluded by physical exam and laboratory
testing for the pregnancy hormone - HCG.
30. z
Progesterone challenge test
TSH (thyroid stimulating hormone)
FSH, LH
Prolactin level
INVESTIGATING
SECONDARY AMENORRHEA
Once pregnancy has been excluded
31. z
Secondary Amenorrhea/Oligomenorrhea:
Evaluation
Progestin challenge test
Medroxyprogesterone acetate 10 mg daily for 10 days
IF withdrawal bleed occurs – Not outflow tract obstruction
IF no withdrawal bleed occurs – Estrogen/Progestin
challenge test
Estrogen/Progestin challenge test
Oral conjugated estrogen 0.625 – 2.5 mg daily for 28 days
Medroxyprogesterone acetate 10 mg daily for last 14 days
IF no withdrawal bleed occurs – Endometrial scarring
Hysterosalpingogram or Hysteroscopy to
evaluate endometrial cavity
32. z
FSH, LH and Thyroid function test
Progesterone challenge test
WITHDRAWAL
BLEEDING
NO WITHDRAWAL
BLEEDING
HYPOESTROGENIC COMPROMISED
OUTFLOW TRACT
Negative E-P
challenge test
Normal FSH
Asherman’s syndrome
(HSG or hysteroscopy)
Normal or Low
FSH
Ovarian
Failure
Hypothalamic-pituitary
failure
ANOVULATION
Positive E-P
challenge test
Very high FSH
FSH normal + high LH PCOS
High prolactin pituitary tumour
NEGATIVE PREGNANCY TEST
INVESTIGATING SECONDAY AMENORRHEA
33. z
Secondary Amenorrhea/Oligomenorrhea:
Evaluation
Evaluation of hyperandrogenism
Symptoms: hirsutism, acne, alopecia,
masculinization, and virilization
Differential diagnosis:
Adrenal disorders: Atypical congenital adrenal
hyperplasia (CAH), Cushing’s syndrome,
Adrenal neoplasm
Ovarian disorders: PCOS, Ovarian neoplasms
Lab: Testosterone, DHEA-S, 17α-
hydroxyprogesterone
Hormone Level Indication
Testosterone < 200 ng/dL PCOS
> 200 ng/dL Evaluate for adrenal or ovarian tumor
DHEA-S < 700 ng/dL PCOS
> 700 ng/dL Evaluate for adrenal or ovarian tumor
17α-hydroxyprogesterone > 4 ng/mL Consider ACTH stimulation test to diagnose CAH
34. z
Ovarian failure
(premature menopause)
chromosomal
anomalies
autoimmune
disease
If the woman is under
30, a karyotype should
be performed to rule out
any mosaicism involving
a Y chromosome.
it is prudent to screen for
thyroid, parathyroid, and
adrenal dysfunction
If a Y chromosome is
found the gonads
should be surgically
excised.
Laboratory evidence of autoimmune
phenomenon is much more prevalent
than clinically significant disease
SECONADARY AMENORRHEA
35. z
Hypothalamic-pituitary
failure
Patients who do not bleed after the progestin challenge
But do bleed after estrogen/progestin and
Have normal or low FSH and LH levels
SECONDARY AMENORRHEA
36. INVESTIGATING
SECONDARY AMENORRHEA
INVESTIGATIONS
DIAGNOSIS
SITE OF DISORDER
FSH, LH and estradiol - Low
Hypothalamic – failure
Weight-related amenorrhea
HYPOTHALAMUS
Prolactin – High
FSH, LH and estradiol – Low
FSH, LH and estrogen - Low
Pituitary adenoma
Sheehan syndrome
PITUITARY
TSH – raised ; T4 – low or N
Hypothyroidism
ENDOCRINE
FSH, LH – high ; E2 – low
FSH – Normal ; LH - High
Premature menopause
PCOS
OVARY
EPCT – negative
HSG / Hystereoscopy
Asherman’s syndrome
MULLERIAN TRACT
37. z TREATMENT OF
AMENORRHEA
The need for treatment depends on
Underlying causes
Need for regular periods
Trying to conceive (fertility
Need for contraception)
38. z TREATMENT OF
AMENORRHEA
TRYING TO CONCEIVE
The prognosis for women with confirmed ovarian failure is poor.
ANOVULATION response well with ovulation induction treatment
PCOS ovulation may resume with weight reduction – fertility drugs
- use of gonadotrophins or ovarian drilling.
HYPERPROLACTINAEMIA respond to treatment with dopamine
agonist.
HYPOTHALAMIC DYSFUNCTION maintenance of normal weight
and change of lifestyle
ASHERMAN’S syndrome breaking down adhesion + insert IUCD
39. z TREATMENT OF
AMENORRHEA
WANT REGULAR PERIOD
The use of
1): COMBINED ORAL CONTRACEPTIVE
2): HRT
NEED CONTRACEPTION
Confirmed ovarian failure will not required contraception
Women requiring contraception oral contraceptives are
method of choice
41. z
Treatment goals of amennorrhea and
oligomenorrhea include prevention of
complications such as osteoporosis, endometrial
hyperplasia and heart disease; preservation of
fertility; and in primary amenorrhea, progression of
normal pubertal development