Clinical
features of pattern baldness in women usually occur during early
teens and late middle age. This is shown by the gradual thinning of hair
over the frontal area. Usually, pattern baldness in women is not
accompanied by increased shedding of hair, but unlike telogen effluvium,
hair loss may be seen from the start. The scalp becomes more and more
visible as the disease progresses.
Most of the time, the central part of the
head widens due to diffused reduction of the
hair’s density, which involves the frontal
scalp and crown. Some women may experience
hair loss on some small areas of the frontal
scalp while others may experience the effect
on the entire scalp including the areas of
parietal and occipital. During hair loss,
women usually retain a rim of hair along the
frontal hairline.
Laboratory Evaluation
Most women with pattern baldness have
normal menstruation, normal fertility, and
normal endocrine function, including correct
levels of circulating androgens. Therefore,
they would only need extensive hormonal testing
when symptoms and signs of androgen excess
become really visible. Laboratory measurement
of serum total or free testosterone, dehydroepiandrosterone
sulfate and prolactin are appropriate when
hirsutism, severe unresponsive cystic acne,
virilization, or galactorrhoea are present.
Measurement of serum thyrotropin, serum iron
and ferritin, and complete blood count may
eliminate common causes of hair loss.
Differential Diagnosis of Androgeneric Alopecia
Androgenetic alopecia in women can be confused
with the former condition. This is in spite
of the fact that features of chronic telogen
effluvium are distinct. Anyway, horizontal
sections of a scalp biopsy help to distinguish
the two conditions once the ratio of terminal
hairs shrinks.
Morphology
As time goes by, the hairs in pattern baldness become progressively miniaturized.
These hairs include the papillae and matrices,
as well as the hair shafts. However, the degree
of hair loss in women is not as extreme as
it is with some men. Women with pattern hair
loss have a mosaic of variable-diameter hairs
in the affected region of the top of the scalp.
Increased spacing between hairs makes the
central part appear wider over the frontal
scalp compared to the occipital scalp. In
some cases, hair volume may still appear normal
but the hair would stop growing to its previous
length and normally results to thin distal
ends. Female pattern hair loss is seen on
women by visual decrease in hair density while
in men, it is by baldness on the affected
areas.
Treatment of Androgenetic Alopecia
Hair loss is a result of abnormal hair cycle.
Because of this, it is theoretically reversible.
However, the current treatment options have
limits in their performance and in some cases,
only small improvements in hair density can
be seen. Advanced pattern baldness may
already be difficult to treat because irreparable
damages may have already taken place on the
follicular stem cell when inflammation surrounded
the bulge area of the follicle. Some systematic
treatment plans for this case include:
- The current treatment for pattern baldness is Minoxidil. The exact mechanism
by which Minoxidil works is not known but
the treatment appears to affect the hair
follicle in three ways: it increases the
span of time
follicles spend in anagen, it rouses follicles
that are in catagen and it enlarges the
actual follicles. In effect, vellus hairs
enlarge
and are converted to terminal hairs, and
shedding is reduced.
- Exogenous estrogen can
be used to treat pattern baldness,
but this regimen
is no longer much
in use because of Minoxidil’s efficacy.
- Finasteride
has been effective on men with pattern baldness but definitely it
was risky on women. This regimen is not advisable
for women who are still in their childbearing
age because of the presence of 5a-reductase
inhibitors that may cause external genitalia
abnormalities in male fetuses.
- Hairstyling,
teasing, coloring, permanents, and the use
of hair spray are means of coping
with the cosmetic effects of pattern baldness. However, when the hair loss is
grave, the affected person may opt to use wigs.
- Hair transplantation is another
option since it has already been accepted
in treating
pattern baldness on men. Now, it is also being used
to treat female hair loss although only
a very few women go for this type of treatment
because of the cost and the possible trauma
that may go with it.
- For those women who
have encountered ineffective and unsuccessful
treatments for hair loss,
surgery may be another option and thus,
the most suited method for them.
Conclusion
Pattern hair loss in women is made up of
many factors whose traits are genetically
determined. It is possible that both androgen-dependent
and androgen-independent mechanisms contribute
to this strange form of hair loss. In women,
it is usually patterned with the most marked
thinning over the frontal and parietal scalp,
and with greater density over the occipital
scalp. Unusual hair loss in women may frustrate
self-esteem, psychological well being, and
body image. Because of this, it is quite vital
for the physician to inform their affected
patients that hair loss could bring about
adverse effects on the quality of a person’s
life.