The absence of menstruation is called amenorrhea. It can be
of two types, primary and
secondary. Primary is the one in which a
girl has never menstruated before and secondary ammenorrhoea is when there is
a cessation of menses after three
or more cycles of
normal menses.
Hormonal conditions
involving the pituitary,
thyroid and ovaries and adrenals
may cause amenorrhea Ovarian or uterine deformities and
pathologies, malnutrition, anemia, obesity are some other causes.
Primary ammenorrhoea:
- Imperforate hymen
The imperforate hymen may present at two ages of development.
It may present in early childhood when the infant
presents with a bulging hymen behind which is a mucocele,
the vagina expanded by vaginal secretions of mucus.
This is easily released and does not subsequently cause
any problems following hymenectomy.
- Transverse vaginal septum
In circumstances where the vagina fails to cannulate the
upper and lower parts of the vagina are separate. These
girls present with cyclical abdominal pain due to the development
of a haematocolpos, but the thickness of the
transverse vaginal septum means that the clinical appearance
is very different from that of an imperforate hymen.
Again, an abdominal mass may be palpable but inspection
of the vagina shows that it is blind ending and, although it
may be bulging, it is pink not blue.
This is a rare phenomenon when embryologically the
uterine body has developed normally, but there is failure
of development of the cervix. This leads to failure
of the development of the upper vagina. The presenting
symptom is again cyclical abdominal pain, but there is
no pelvic mass to be found because there is no vagina to be distended.
- Absent vagina and non-functioning uterus
This is the second mostcommoncause of primary amenorrhoea,
second only to Turner syndrome. Secondary sexual
characteristics are normal as would be expected as ovarian
function is unaffected. Examination of the genital area
discloses normal female external genitalia but a blind
ending vaginal dimple which is usually not more than
1.5 cm in depth. This is known as the Meyer-Rokitansky-
Kuster-Hauser syndrome (or the MRKH syndrome) and
the uterine development is usually very rudimentary.
- XY female – androgen insensitivity
There are a number of ways in which an individual may
have an XY karyotype and a female phenotype. These
are failure of testicular development, enzymatic failure of
the testis to produce androgen, particularly testosterone,
and androgenic receptor absence or failure of function. In
androgen insensitivity there is a structural abnormality
with the androgen receptor, due to abnormalities of the
androgen receptor gene, which results in a non-functional
receptor. This means that the masculinizing effect of
testosterone during normal development is prevented and
patients are therefore phenotypically female with normal
breast development.
- Resistant ovary syndrome
This is an extremely rare condition as a cause of primary
amenorrhoea, but it has been described. There
are elevated levels of gonadotrophin in the presence of
apparently normal ovarian tissue; patients do have some degree of secondary sexual characteristic development,
but never produce adequate amounts of oestrogen to result
in menstruation.
- Constitutional delay
There are, however, a number of girls in whom normal
secondary sexual characteristics exist. There is no anatomical
anomaly and endocrine investigations are all normal.
If serial sampling is carried out during a 24-h period
these young women are found to have immature pulsatile
release of GnRH.
- Secondary sexual characteristics absent
- Normal stature
- Hypogonadotrophic hypogonadism
- Congenital
In this condition the hypothalamus lacks the ability
to produce GnRH and therefore there is a hypogonadotrophic
state. The pituitary gland is normal and
stimulation with exogenousGnRHleads to normal release
of gonadotrophins.
- Acquired
- Weight loss/anorexia
- Excessive exercise
A
number of examples of this exist including ballet dancers,
athletes and gymnasts. These girls fail to menstruate and
may actually develop frank anorexia nervosa.
- Hyperprolactinaemia
This is an unusual cause of primary amenorrhoea and
much more commonly seen as a cause of secondary amenorrhoea.
There may be a recognizable prolactinoma in the
pituitary, but often no apparent reason is seen.
- Hypergonadotrophic hypogonadism
Gonadal agenesis/XX agenesis
XX or XY agenesis
In this situation there is complete failure of development
of the gonad. These girls may be either 46XX or 46XY.
The 46XX pure gonadal dysgenesis is an autosomal recessive
disorder and other genes other than those located
on the X chromosome are involved.
- Gonadal dysgenesis/Turner mosaic/Other X deletions or mosaics/XY enzymatic failure
The gonad is described as dysgenetic if it is abnormal
in its formation. This encompasses a spectrum of conditions
which vary with the degree of differentiation.
The commonest is Turner syndrome, which is a single
X chromosome giving 45X as the karyotype. The missing
chromosome may be either X or Y. There are other
circumstances in which the gonadal dysgenesis may be
associated with a mosaic. Here two cell lines exist within
one individual, the most common being 45X/46XX.
- Ovarian failure
These unfortunate girls have ovarian failure as a result
of either chemotherapy or radiotherapy for childhood
malignancy.
- Galactosaemia
These unfortunate girls have ovarian failure as a result
of either chemotherapy or radiotherapy for childhood
malignancy.
- Short stature
- Hypogonadotrophic hypogonadism
- Congenital Hydrocephalus
The most common aetiology in this group is hydrocephalus,
as a result of childhood or neonatal infection. It is believed that this aetiology damages the hypothalamus
and renders the GnRH-secreting neurones functionless,
thereby creating a hypogonadotrophic hypogonadic state.
- Acquired
- Trauma
Trauma to the skull base may also damage the hypothalamus,
and prevent GnRH secretion.
- Empty sella syndrome
In this unusual condition the sella turcica is found to be
empty and there is congenital absence of the pituitary
gland or at least part of it leading to failure to produce
gonadotrophins. Thus secondary sexual characteristics do
not develop.
- Tumours
A number of tumours have been described in the pituitary
which may lead to destruction of the gland. The most
common of which is craniopharyngioma.
Hypergonadotrophic hypogonadism
- Turner syndrome
In pure Turner syndrome the chromosome complement
is 45X and here a syndrome of short stature and ovarian
failure lead to the typical features of this syndrome.
Other X deletions or mosaics
- Heterosexual development
- Congenital adrenal hyperplasia
This anomaly occurs as a result of an enzyme deficiency in
the steroid pathway of the adrenal gland
- Androgen-secreting tumour:
- 5α-Reductase deficiency
This form of XY female results from an enzyme deficiency,
which prevents the conversion of testosterone to
5-hydroxytestosterone, which is a necessary biochemical
step in the development of the external genitalia in the
male.
- True hermaphrodite
In this condition the child has the presence of both testicular
and ovarian tissue. This may occur either in
isolation, such that there is an ovary and a testis in
the same individual, or the gonad may contain both
ovarian and testicular tissue.
- Absent Müllerian inhibitor
There is a rare condition in which an XY individual
may not produce Müllerian-inhibitory substance (MIS)
which means that the internal genitalia are female with
persistence of the Müllerian structures and also because
testosterone is produced the Wolffian structures also persist.
Secondary ammenorrhoea
- GENITAL TRACT ABNORMALITIES
- Asherman’s syndrome :
- Cervical stenosis
- OVARIAN CAUSES OF SECONDARY AMENORRHOEA :
- Polycystic ovary syndrome
- Premature ovarian failure.
- Pituitary causes of secondary amenorrhoea:
- Hypothalamic causes of secondary amenorrhoea :
- Systemic disorders causing secondary amenorrhoea :
- Weight-related amenorrhoea :
- Exercise-related amenorrhoea:
- PSYCHOLOGICAL STRESS
- Iatrogenic causes of amenorrhoea
Treatment
Homeopathy can do wonders in treating both types of amenorrhea. Good remedies are there in homeopathy and can show excellent results . After a good study of the case the best remedy has to be found out from the individualistic symptoms. The best remedies that have given me good results include pulsatilla, sepia,calcarea,natrum mur , kali carb,Graphites,Lycopodium
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