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Puberty

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Title: Puberty


1
Puberty
  • Clinic of Reproduction and Gynecology
  • Pomeranian Medical Academy
  • Iwona Szydlowska

2
  • It is a physiological phase lasting 2 to 5
    years, during which the genital organs mature

3
SEXUAL MATURATION
  • Physical, emotional and sexual transition from
    childhood to adulthood
  • Gradually. Sequence of physiological changes.

4
  • The first sign of pubertal development is usually
    breast growth (thelarche), followed by appearance
    of pubic hair (pubarche), then axillary hair
    (adrenarche), then menarche.
  • The mean interval between breast budding and
    menarche is 2.5 years with a standard deviation
    of about one year.

5
ADRENARCHE
  • Somatic changes dependent on adrenal steroid
    hormones
  • means increased activity of the suprarenal cortex
    at puberty with increased production of adrenal
    androgens which lead to appearance of pubic and
    axillary hair.

6
GONADARCHE
  • Somatic changes dependent on gonadal sex steroid
    hormones

7
CAUSE OF PUBERTY
  • During childhood, the hypothalamus is extremely
    sensitive to the negative feedback exerted by the
    small quantities of estradiol testosterone
    produced by the child's ovaries.
  • As puberty approaches, the sensitivity of the
    hypothalamus is decreased and subsequently, it
    increase the pulsatile GnRH secretion .

8
CNS-Hypothalamus-Pituitary Ovary-Uterus
Interaction
Neural control
Chemical control
Dopamine (-)
Norepinephrine ()
Endorphines (-)
Hypothalamus
Gn-RH
?


Ant. pituitary
FSH, LH
Ovaries
Progesterone
Estrogen
Uterus
Menses
9
HYPOTHALAMUS-PITUITARYOVARIAN AXIS
  • Necessary for the normal sexual maturation.
  • Pulsatile secretion of gonadotropins begins the
    maturation process.
  • Important is not the amplitude of Gn pulses, but
    the frequency.
  • In the late prepubertal period secretion of Gn is
    reinforced subsequent pulses of GnRH reinforce
    the release of Gn.
  • Activation of positive and negative feedback
    loops at puberty.

10
  • The anterior pituitary responds by progressive
    secretion of FSH and LH associated with increased
    secretion of growth hormone.

11
  • The ovaries respond to the increase Gonadotrophin
    secretion by follicular development estrogen
    secretion.

12
  • Estrogen causes development of the genital organs
    and the appearance of the secondary sexual
    characters.
  • With increased estrogen secretion, menarche and
    cyclic estrogen secretion occurs.

13
SECONDARY SEX CHARACTERS INCLUDE
  • development of the breast,
  • appearance of pubic and axillary hair.

14
FACTORS AFFECTING THE INITIATION OF PUBERTAL
DEVELOPMENT
  • 1 - Height and weight ratio- 48 kg (nutritional
    factors).
  • 2 - Maturation of the hypothalamus.
  • 3 - Increased neurotransmitter output in CNS.
  • 4 - Onset of adrenal androgen activity.

15
DEPOSITION OF SC FAT
  • 17 to menstruate
  • 22 to ovulate

16
PUBERTY
  • Five stages from childhood to full maturity (P1
    to P5), described by Marshall and Tanner. In both
    sexes, these stages reflect the progressive
    modifications of the external genitalia and of
    sexual hair. Secondary sex characteristics appear
    at a mean age of 10.5 y in girls and 11.5 to 12 y
    in boys.

17
SEQUENCE AND AGE OF SEXUAL MATURATION AND
HORMONES RESPONSIBLE FOR THIS PROCESSES.
Event Age (mean) Hormones
Thelarche (breast budding) Pubarche (sexual hair growth) Growth spurt Menarche Adult breast development Adult sexual hair 10,5 10,6 12,0 12,7 13,7 14,7 Estradiol Androgens GH Estradiol Progesterone Androgens
18
FEMALE PUBERTAL STAGES (TANNER)
  • P1 Prepubertal
  • P2 Early development of subareolar breast bud
    /- small amounts of pubic hair and axillairy
    hair
  • P3 Increase in size of palpable breast tissue
    and areolae, increased amount of dark pubic
    hair and/of axillary hair
  • P4 Further increase in breast size and areolae
    that protrude above breast level adult pubic
    hair
  • P5 Adult stage, pubic hair with extension to
    upper thigh

19
TANNERS CLASSIFICATION OF SEXUAL MATURITY
BREASTS
  • Th 1- child (only papillae are elevated)
  • Th 2 prepubertal (breast bud and papilla are
    elevated and a small mount is present areola
    diameter is enlarged) age 11,2 yrs (9,0-13,3
    yrs)
  • Th 3 - early pubescent, age 12,2 yrs (10,0-14,3)
  • Th 4 - late pubescent, age 13,1 yrs (10,8-15,3)
  • Th 5 - adult mature breast (recession of areola
    to the mound of breast tissue, rounding of the
    breast mound, and projection of only the papilla
    are evident) age 15,3 yrs (11,9-18,8)

20
TANNERS CLASSIFICATION OF SEXUAL MATURITY PUBIC
HAIR
  • P1- prepubertal/Pre-adolescent (vellus hair only,
    no pubic hair)
  • P2 - presexual hair (sparse growth of long,
    slightly pigmented, downy hair or only slightly
    curled hair, appearing along labia) - age 11,7
    (9,3-14,1)
  • P3 - sexual hair (hair is darker, coarser, more
    curled, and spreads above the syphysis pubis)
    age 12,4 (10,2-14,6)
  • P4 - mild-escutcheon (Adult-type hair area
    covered is less than that in most adults there
    is no spread to the medial surface of thigh)
    age 13,0 (10,8-15,1)
  • P5 - female escutcheon (Adult-type hair with
    increased spread to medial surface of thighs
    distribution is as an inverse triangle) age
    13,4 ( 12,2-16,7)

21
GENITAL ORGANS CHANGES
  • Mons pubes, labia majora minora
    increase in size.
  • Vagina
  • length increase, appearance of the rugae
  • epithelium thick, stratified squamous,
    containing glycogen
  • pH acidic.

22
GENITAL ORGANS CHANGES
  • Uterus
  • enlarge, Uterus / Cervix 2 / 1
  • Ovaries
  • Increase in size, almond shape
  • 300 thousands primary follicle at menarche (2
    million at birth)

23
  • In prepuberty, the ovarian size volume extends
    from 0.3 to 0.9 cm3. More than 1.0 cm3 indicates
    that puberty has begun. During puberty, the
    ovarian size increases rapidly to a mean
    postpubertal volume of 4.0 cm3 (1.8 to 5.3 cm3).

24
MENARCHE
  • During puberty, plasma E2 levels fluctuate
    widely, probably reflecting successive waves of
    follicular development that fail to reach the
    ovulatory stage. The uterine endometrium is
    affected by these changes and undergoes cycles of
    proliferation and regression, until a point is
    reached when substantial growth occurs so that
    withdrawal of estrogen results in the first
    menstruation (menarche).

25
OVULATION
  • Plasma progesterone remains at low levels even
    if secondary sexual characteristics have
    appeared. A rise in progesterone after menarche
    is, in general, indicative that ovulation has
    occured. The first ovulation does not take place
    until 6-9 months after menarche because the
    positive feedback mechanism of estrogen is not
    developed.

26
ADOLESCENCE
  • Is the period of life during which the child
    becomes an adult person
  • i.e. the physical , sexual and psychological
    development are complete .
  • Puberty represents the first part of adolescence .

27
ABNORMALITIES OF PUBERTY
  • 1 - Precocious puberty.
  • 2 - Delayed puberty.
  • 3 - Growth problems
  • during adolescence e.g. short stature or tall
    stature, marked obesity and menstrual disorders
    at puberty .

28
  • FEMALE PRECOCIOUS PUBERTY

29
DEFINITION
  • It means menarche or appearance of any of the
    secondary sexual characters before the age of 8
    years.

30
TYPES
  • 1 - True precocious puberty.
  • 2 - False (pseudo-precocious puberty).
  • 3 - Incomplete precocious puberty.

31
1. TRUE (CENTRAL,CEREBRAL) PRECOCIOUS PUBERTY.
  • It is due to increased production of pituitary
    gonadotrophins.

32
2. FALSE (PERIPHERAL) PRECOCIOUS PUBERTY
  • It is of peripheral origin.
  • It is due to secretion of sex hormones (estrogen
    or androgen) which is not dependent on pituitary
    gonadotrophins as in case of estrogenic or
    androgenic ovarian tumors.

33
2. FALSE (PERIPHERAL) PRECOCIOUS PUBERTY
  • False precocious puberty may be isosexual or
    heterosexual.
  • A girl who feminizes early is defined as having
    isosexual precocious puberty.
  • A girl who virilize early is defined as having
    heterosexual precocious puberty. (female
    pseudohermaphrodite)

34
3. INCOMPLETE PRECOCIOUS PUBERTY
  • In this case only one pubertal change as breast
    development is present before the age of 8 years
    without the presence of any other pubertal
    changes and in absence of increased estrogen
    production.
  • The other pubertal changes occur at the normal
    age.

35
3. INCOMPLETE PRECOCIOUS PUBERTY
  • Incomplete forms of precocious puberty include
    premature thelarche (unilateral or bilateral),
    premature pubarche and premature adrenarche with
    appearance of pubic and axillary hair.

36
PRECOCIOUS PUBERTY - TERMS
  • breast development - premature thelarche,
  • pubic development - premature pubarche
  • axillary hair development - premature adrenarche
  • menses - premature menarche

37
ETIOLOGY OF PRECOCIOUS PUBERTY
  • 1.Constitutional or idiopathic
  • In most cases of precocious puberty (90) no
    cause is found.
  • For some unknown reason the hypothalamus
    stimulates the pituitary gland to secrete its
    gonadotrophic hormones.
  • There is normal menstruation and ovulation.
  • Pregnancy can occur at young age.

38
ETIOLOGY OF PRECOCIOUS PUBERTY
  • 2. Organic lesions of the brain
  • The next common cause.
  • Organic lesions affecting the midbrain,
    hypothalamus, pineal body, or pituitary gland may
    lead to premature release of pituitary
    gonadotrophins.
  • Examples include traumatic brain injury,
    meningitis, encephalitis, brain abscess, brain
    tumor as glioma, craniopharyngioma, and
    hamartomas.
  • 3. McCune-Albright syndrome.

39
McCune-Albright Syndrome
  • The disease is found more frequently in girls.
  • It consists of a triad of
  • Precocious puberty,
  • Cystic changes in bones, and
  • Cafe-au lait patches of the skin.
  • The cause of precocious puberty is autonomous
    production of estrogen by the ovaries.
  • FSH and LH levels are low.
  • The treatment is testolactone oral tablets which
    inhibit ovarian steroidogenesis.

40
ETIOLOGY OF PRECOCIOUS PUBERTY
  • 4. Adrenal causes
  • (a) Hyperplasia, adenoma, or carcinoma of
    suprarenal cortex.
  • Congenital adrenal hyperplasia and Cushing
    syndrome lead to precocious puberty in the male
    direction, i.e. heterosexual precocious puberty
  • (b) Estrogen secreting adrenal tumor which is
    very rare.

41
ETIOLOGY OF PRECOCIOUS PUBERTY
  • 5. Ovarian causes
  • (a) Estrogen producing tumors as granulosa and
    theca cell tumor
  • (b) Androgen producing tumors as androblastoma
  • (c) Choriocarcinoma because it secretes human
    chorionic gonadotrophin (HCG) which may stimulate
    the ovaries to secrete estrogen
  • (d) Dysgerminoma if it secretes HCG.

42
ETIOLOGY OF PRECOCIOUS PUBERTY
  • 6. Juvenile hypothyroidism
  • Lack of thyroxine leads to increased production
    of TSH and the secretion of pituitary
    gonadotrophins may also be increased.
  • 7. Drugs
  • Iatrogenic may follow oral or local
    administration of estrogen.
  • A long course of estrogen cream used for
    treatment of vulvovaginitis of children may lead
    to breast development or withdrawal bleeding.

43
DIAGNOSIS OF PRECOCIOUS PUBERTY
  • 1. History
  • It excludes iatrogenic source of estrogen or
    androgen.
  • It differentiates between isosexual and
    heterosexual precocious puberty.

44
DIAGNOSIS OF PRECOCIOUS PUBERTY
  • 2. Physical examination
  • It diagnoses McCune-Albright syndrome.
  • Neurologic and ophthalmologic examinations
    exclude organic lesions of the brain.

45
DIAGNOSIS OF PRECOCIOUS PUBERTY
  • 3. Special investigations
  • These are done according to the history and
    clinical findings and include

46
3. SPECIAL INVESTIGATIONS
  • a. X-ray examination of the hand and wrist
    to determine bone age.
  • Estrogen stimulates growth of bone but causes
    early fusion of the epiphysis.
  • So the child is taller than her peers during
    childhood, but she is short during adult life.

47
3. SPECIAL INVESTIGATIONS
  • b. Hormonal assay
  • including serum FSH, LH, prolactin, estradiol,
    testosterone, 17a-hydroxy progesterone, TSH, and
    human chorionic gonadotrophin to diagnose
    Choriocarcinoma.

48
3. SPECIAL INVESTIGATIONS
  • c. Ultrasonography
  • to diagnose ovarian or adrenal tumor.
  • d. CT or MRI
  • to diagnose an organic lesion of the brain, or
    adrenal tumor.

49
  • Hypothyroidism retards bone age and is the only
    condition of precocious puberty in which bone age
    is retarded

50
IDIOPATHIC PRECOCIOUS PUBERTY
  • is diagnosed after excluding all other causes.

51
TREATMENT OF PRECOCIOUS PUBERTY
  • Objectives
  • Arrest maturation until normal pubertal age.
  • Attenuate diminish established precocious
    characteristics.
  • Maximize adult height.
  • Avoid abuse, reduce emotional social problems

52
TREATMENT OF PRECOCIOUS PUBERTY
  1. Treatment of the cause, e.g., thyroxin for
    hypothyroidism, removal of ovarian and adrenal
    tumors.
  2. Incomplete forms of precocious puberty do not
    require treatment, as estrogen production is not
    increased.

53
McCune-Albright syndrome
  • Is treated with testolactone oral tablets.
  • The drug inhibits the formation of estrogen from
    its precursors, so reduces estrogen level.
  • The dose is 20 mg/kg body weight in 4 divided
    doses and increased to 40 mg/kg body weight
    during a 3 week interval.

54
IDIOPATHIC TYPE
  • is treated by explanation and reassurance and by
    giving one of the following drugs which inhibit
    the secretion of gonadotrophins
  • (a) Gonadotrophin releasing hormone analogues
    which are given as daily nasal spray,
    intramuscular, or subcutaneous injections every 4
    weeks.
  • (b) Medroxyprogesterone acetate tablets (Provera
    tablets) or intramuscular injection
    (Depo-Provera)
  • (c) Danazol capsules
  • (d) Cyproterone acetate tablets (Androcur).

55
IDIOPATHIC TYPE
  • Treatment is given till the age of 12 years (mean
    age of pubertal development).

56
Gonadotrophin releasing hormone analogues
  • Drug of choice because it achieves all
    objectives
  • It acts by binding to the anterior pituitary
    receptors causing down-regulation
    desensitization of the pituitary.
  • Regression of symptoms occurs in the first year
  • Delayed epiphyseal fusion treatment more
    effective if begun before bone age gt12 yrs.
  • Maintain E2 at lt10 pg/mL.
  • Children require higher doses than adults for
    suppression.
  • Adrenarche will continue.

57
DELAYED PUBERTY
  • Secondary Sexual Characters do not develop
    by the age of
  • 14 yrs
  • or
  • no menstruation till age of 16yrs

58
DELAYED PUBERTY
  • It is either
  • Delayed onset Breast bud does not appear till 13
    years or menarche does not occur till 16 years.
  • or
  • Delayed progreession Menarche does not occur
    within 5 years after breast bud.

59
ETIOLOGY OF DELAYED PUBERTY
  • 1 - Constitutional
    with ve family history,
    short stature normal fertility.
  • 2 - Hypergonadotropic hypogonadism (FSH gt 40)
    ovarian causes of Iry amenorrhea primary
    ovarian failure 2ry ovarian failure (if occurs
    before puberty).
  • 3 - Hypogonadtropic hypogonadism hypothalamic
    pituitary causes of Iry amenorrhea e.g. Kallman's
    syndrome, Anorexia nervosa.

60
ETIOLOGY OF DELAYED PUBERTY
  • 4 - Normogonadtropic hypogonadism end organ
    defects uterine causes (Mullerian agenesis and
    testicular feminization syndrome), imperforate
    hymen (c/o delayed menarche normal other
    aspects of puberty), PCOD and Virilizing ovarian
    adrenal tumors.
  • 5 - General causes of amenorrhea (endocrinal or
    non-endocrinal especially malnutrition) if
    occurred before puberty ?GH steroid synthesis
    defects .

61
INVESTIGATIONS OF DELAYED PUBERTY
  • History
  • 1 - Family history, nutritional history, any
    systemic diseases (e.g. history of endocrinal
    disturbances).
  • 2 - Clinical picture of space occupying lesion in
    the ovary, adrenal, pituitary hypothalamus.
  • 3 - Periodic pain and ve 2ry sexual
    characteristics in imperforate hymen .

62
INVESTIGATIONS OF DELAYED PUBERTY
  • Examination
  • (A) Body measurement for causes of amenorrhea ?
    or ? weight, short or tall stature, proportions
    (upper/lower segment ratio arm span/height
    ratio).
  • (B) Tanner staging of breast, pubic axillary
    hair if present.
  • (C) Clinical picture of Turner, Mullerian
    agenesis imperforate hymen.
  • (D) Neurological examination for smell sense
    (Kallman's syndrome), visual field other
    cranial nerve lesions .

63
SPECIAL INVESTIGATIONS
  • 1 - FSH LH assay important to differentiate
    level of the lesion progesterone assay in 17 OH
    deficiency.
  • 2 - Chromosomal study if short stature or
    hypergonadotropic type.
  • 3 - Radiological bone age study radiologic
    study for pituitary adenoma.

64
AMENORRHEA
65
DEFINITIONS
  • Primary amenorrhea
  • Failure of menarche to occur when expected in
    relation to the onset of pubertal development.
  • ? No menarche by age 16 years with signs of
    pubertal development.
  • ? No onset of pubertal development by age 14
    years.

66
PATHOPHYSIOLOGY OF AMENORRHEA
  • Inadequate hormonal stimulation of the endomerium
    Anovulatory amenorrhea
  • - Euestrogenic
  • - Hypoestrogenic
  • Inability of endometrium to respond to hormones
    Ovulatory amenorrhea
  • - Uterine absence - Utero-vaginal agenesis
  • - XY-Females
    (e.g T.F.S)
  • - Damaged endometrium (e.g Ashermans
    syndrome)

67
EUESTROGENIC ANOVULATORYAMENORRHEA
  • Normal androgens
  • Hypothalamic-pituitary dysfunction (stress,
    weight loss or gain, exercise)
  • Hyperprolactinemia
  • Feminizing ovarian tumour
  • Non-gonadal endocrine disease (thyroid, adrenal)
  • Systemic illness
  • High androgens
  • PCOS
  • Musculinizing ovarian tumour
  • Cushings syndrome
  • Congenital adrenal hyperplasia (late onset)

68
HYPOESTROGENIC ANOVULATORYAMENORRHEA
  • Normal androgens
  • - Hypothalamic-pituitary failure
  • - Severe dysfunction
  • - Neoplastic,destructive,
  • infiltrative, infectious
  • trumatic conditions
  • involving hypothalamus or pituitary
  • - Ovarian failure
  • - Gonadal dysgenesis
  • - Premature ovarian failure
  • - Enzyme defect
  • - Resistant ovaries
  • - Radiotherapy, chemotherapy
  • High androgens
  • - Musculinizing ovarian tumour
  • - Cushings syndrome
  • - Congenital adrenal hyperplasia (late onset)

69
DIAGNOSIS
  • HISTORY
  • PHYSICAL EXAMINATION
  • ULTRASOUND EXAMINATION

70
CRYPTOMENORRHEA
  • Outflow obstruction to menstrual blood
  • Imperforate hymen
  • Transverse Vaginal septum with functioning uterus
  • Isolated Vaginal agenesis with functioning uterus
  • Isolated Cervical agenesis with functioning
    uterus
  • Intermittent abdominal pain
  • Possible difficulty with micturition
  • Possible lower abdominal swelling

71
IMPERFORATE HYMEN
72
Once cryptomenorrhea are excluded The patient is
a bioassay for Endocrine abnormalities
Four categories of patients are identified
1. Amenorrhea with absent or poor secondary sex
characters
2. Amenorrhea with normal 2ry sex characters
3. Amenorrhea with signs of androgen excess
4. Amenorrhea with absent uterus and vagina
73
AMENORRHEAAbsent or poor secondary sex
Characteristics
FSH Serum level
Low / normal
High
Hypogonadotropic hypogonadim
Gonadal dysgenesis
74
AMENORRHEANormal secondary sex Characteristics
  • - FSH, LH, Prolactin, TSH
  • Provera 10 mg PO daily
  • x 5 days

Bleeding
No bleeing
?Prolactin ? TSH
- Mild hypothalamic dysfunction - PCO
(?LH/FSH)
Further Work-up (Endocrinologist)
Review FSH result And history (next slide)
75
FSH
Low / normal
High
Hypothalamic-pituitary Failure
Ovarian failure
head CT- scan or MRI
?If lt 25 yrs or primary amenorrhea ? karyoptype
?If lt 35 yrs ?autoimmune disease
- Severe hypothalamic dysfunction - Intracranial
pathology
?? Ovarian biopsy
76
AMENORRHEA Utero-vaginal absence
Karyotype
46-XX
46-XY
Mullerian Agenesis (MRKH syndrome)
Andogen Insenitivity (TFS syndrome)
. Gonadal regression . Testicular enzymes
deficiency . Leydig cell agenisis
Normal breasts absent sexual hair
Normal breasts sexual hair
Absent breasts sexual hair
77
AMENORRHEA Signs of androgen excess
Testosterone, DHEAS, FSH, and LH
DHEAS gt700 mug/dL
DHEAS 500-700 mug/dL
TEST. gt200 ng/dL
?Serum 17-OH Progesterone level
U/S ? MRI or CT
Ovarian Or adrenal tumor
Adrenal hyperfunction
Late CAH
Lower elevations ? PCOS (High LH / FSH)
78
AMENORRHEA
  • PRIMARY AMENORRHEA
  • Ovarian failure 36
  • Hypogonadotrophic hypogonadism 34
  • PCOS 17
  • Congenital lesions (other than dysgenesis)
    4
  • Hypopituitarism 3
  • Hyperprolactinaemia 3
  • Weight related 3

79
GONADAL DYSGENESIS
  • Chromosomally incompetent
  • - Classic Turners syndrome (45XO)
  • - Turner variants (45XO/46XX),
  • (46X-abnormal X)
  • - Mixed gonadal dygenesis (45XO/46XY)
  • Chromosomally competent
  • - 46XX (pure gonadal dysgenesis)
  • - 46XY (Swyers syndrome)

80
TURNERS SYNDROME
  • Sexual infantilism and short stature.
  • Associated abnormalities, webbed neck,
    coarctation of the aorta, high-arched pallate,
    cubitus valgus, broad shield-like chest with
    wildely spaced nipples, low hairline on the neck,
    short metacarpal bones and renal anomalies.
  • High FSH and LH levels.
  • Bilateral streaked gonads.
  • Karyotype - 80 45, X0
  • - 20 mosaic forms
    (46XX/45X0)
  • Treatment HRT

81
TURNERS SYNDROME
Mosaic (46-XX / 45-XO)
(Classic 45-XO)
82
OVARIAN DYSGENESIS
83
NONE-DYSGENESIS OVARIAN FAILURE
  • Steroidogenic enzyme defects (17-hydroxylase)
  • Ovarian resistance syndrome
  • Autoimmune oophoritis
  • Postinfection (eg. Mumps)
  • Postoopherectomy
  • Postradiation
  • Postchemotherapy

84
HYPOGONADOTROPHIC HYPOGONADISM
  • Normal hight
  • Normal external and internal genital organs
    (infantile)
  • Low FSH and LH
  • MRI to intra-cranial pathology.
  • 30-40 anosmia (Kallmanns syndrome)
  • Sometimes ? constitutional delay
  • Treat according to the cause (HRT), potentially
    fertile.

85
CONSTITUTIONAL PUBERTAL DELAY
  • Common cause (20)
  • Under stature and delayed bone age
  • ( X-ray Wrist joint)
  • Positive family history
  • Diagnosis by exclusion and follow up
  • Prognosis is good
  • (late developer)
  • No drug therapy is required - Reassurance (?
    HRT)

86
WEIGHT-RELATED AMENORRHOEAAnorexia Nervosa
  • 1o or 2o Amenorrhea is often first sign
  • A body mass index (BMI) lt17 kg/m²? menstrual
    irregularity and amenorrhea
  • Hypothalamic suppression
  • Abnormal body image, intense fear of weight gain,
    often strenuous exercise
  • Mean age onset 13-14 yrs (range 10-21 yrs)
  • Low estradiol ? risk of osteoporosis
  • Bulemics less commonly have amenorrhea due to
    fluctuations in body wt, but crash diets can
    cause menstrual irregularity.
  • Treatment ? body wt. (Psychiatrist referral)

87
EXERCISE-ASSOCIATED AMENORRHOEA
  • Common in girls who participate in sports (e.g.
    competitive athletes, ballet dancers)
  • Eating disorders have a higher prevalence in
    female athletes than non-athletes
  • Hypothalamic disorder caused by abnormal
    gonadotrophin-releasing hormone pulsatility,
    resulting in impaired gonadotrophin levels,
    particularly LH, and subsequently low oestrogen
    levels

88
UTERO-VAGINAL AGENISIS Mayer-Rokitansky-Kuster-Ha
user syndrome
  • 15 of 1ry amenorrhea
  • Normal breasts and Sexual Hair development
    Normal looking external female genitalia
  • Normal female range testosterone level
  • Absent uterus and upper vagina normal ovaries
  • Karyotype 46-XX
  • 15-30 renal, skeletal and middle ear anomalies
  • Treatment Vaginal creation (Dilatation vs
    Vaginoplasty)

89
ANDROGEN INSENSITIVITYTesticular feminization
syndrome
  • X-linked trait
  • Normal breasts but no sexual hair
  • Normal looking female external genitalia
  • Absent uterus and upper vagina
  • Karyotype 46, XY
  • Male range testosterone level
  • Treatment gonadectomy after puberty HRT
  • ? Vaginal creation (dilatation VS Vaginoplasty)

90
HORMONAL TREATMENTPRIMARY AMENORRHEA WITH ABSENT
SECONDARY SEXUAL CHARACTERISTICS
  • To achieve pubertal development
  • Premarin 5mg D1-D25 provera 10mg D15-D25 X
    3 months ? 2.5mg premarin X 3 months and
  • ? 1.25mg premarin X 3 months
  • Maintenance therapy
  • 0.625mg premarin provera or ready HRT
    preparation or 30µg oral contraceptive pill

91
TREATMENT OF DELAYED PUBERTY
  • Constitutional Reassurance.
  • Treatment of the cause (if treatable) or cyclic
    estrogen-progesterone hormone replacement
    therapy. If the cause is not treatable, for 3
    cycles Norethistrone acetate 5 mg twice daily
    for 21 d or OCP
  • Patient with Y chromosome cell line
    Gonadectomy hormone replacement therapy

92
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