Hair has been called our "crowning glory." Society has placed a great deal of social and cultural importance on hair and hairstyles. Unfortunately, many conditions, diseases, and improper hair care result in excessive hair loss. People who notice their hair shedding in large amounts after combing or brushing, or whose hair becomes thinner or falls out, should consult a dermatologist. With correct diagnosis, many people with hair loss can be helped.
Dermatologists, physicians who specialize
in treating diseases of the hair and skin, will evaluate a patient's hair
problem by asking questions about diet, medications including vitamins and
health food taken in the last six months, family history of hair loss,
recent illness and hair care habits. Hormonal effects may be evaluated in
women by asking about menstrual cycles, pregnancies and menopause. After
examining the scalp and hair, the dermatologist may check a few hairs
under the microscope. Sometimes blood tests or a scalp biopsy may be
required for an accurate diagnosis. It's important to find the cause and
whether or not the problem will respond to medical treatment.
Normal Hair Growth
About 90 percent of the hair on a person's
scalp is growing at any one time. The growth phase lasts between two and
six years. Ten percent of the hair is in a resting phase that lasts two to
three months. At the end of its resting stage, the hair is shed. When a
hair is shed, a new hair from the same follicle replaces it and the
growing cycle starts again. Scalp hair grows about one-half inch a month.
As people age, their rate of hair growth slows. Natural blondes typically
have more hair (140,000 hairs) than brunettes (105,000 hairs) or redheads
(90,000 hairs). Most hair shedding is due to the normal hair cycle, and
losing 50-to-100 hairs per day is no cause for alarm. However, if you are
concerned about excessive hair loss or dramatic thinning, consult your
dermatologist.
Causes of Excessive Hair Loss
Improper Hair Cosmetic Use/Improper Hair Care - Many men and women use chemical treatments on their hair, including dyes, tints, bleaches, straighteners and permanent waves. These treatments rarely damage hair if they are done correctly. However, the hair can become weak and break if any of these chemicals are used too often. Hair can also break if the solution is left on too long, if two procedures are done on the same day, or if bleach is applied to previously bleached hair. If hair becomes brittle from chemical treatments, it's best to stop until the hair has grown out.
Hairstyles that pull on the hair, like
ponytails and braids, should not be pulled tightly and should be
alternated with looser hairstyles. The constant pull causes some hair
loss, especially along the sides of the scalp.
Shampooing, combing and brushing too often can also damage hair, causing
it to break. Using a cream rinse or conditioner after shampooing will make
it easier to comb and more manageable. When hair is wet, it is more
fragile, so vigorous rubbing with a towel, and rough combing and brushing
should be avoided. Don't follow the old rule of 100 brush strokes a
day-that damages hair. Instead, use wide toothed combs and brushes with
smooth tips.
Hereditary Thinning or Balding - Hereditary balding or thinning is the
most common cause of hair loss. The tendency can be inherited from either
the mother's or father's side of the family.
Women with this trait develop thinning hair, but do not become completely bald. The condition is called androgenetic alopecia and it can start in the teens, twenties or thirties. There is no cure, although medical treatments have recently become available that may help some people. One treatment involves applying a lotion, minoxidil, to the scalp twice a day. Another treatment for men is a daily pill containing finasteride, a drug that blocks the formation of the active male hormone in the hair follicle.
When confronted with thinning hair or
baldness, men and some women consider hair transplantation, which is a
permanent form of hair replacement. Anyone who has suffered permanent hair
loss may be a candidate for hair transplantation. The procedure of hair
transplantation involves moving some hair from hair-bearing portions
(donor sites) of the head to bald or thinning portions (recipient sites)
and/or removing bald skin. Because the procedures involve surgery as
well as time and money, they should not be undertaken lightly.
Your dermatologist will help decide which method or combination of methods
is right for you.
Androgenetic Alopecia - male (L) and female (R)
Alopecia Areata - In this type of hair
loss, hair usually falls out, resulting in totally smooth, round patches
about the size of a coin or larger. It can, rarely, result in complete
loss of scalp and body hair. This disease may affect children or adults of
any age.
The cause of alopecia areata is unknown. Apart from the hair loss,
affected persons are generally in excellent health. In most cases, the
hair regrows by itself. Dermatologists can treat many people with this
condition. Treatments include topical medications, a special kind of light
treatment, or in some cases pills.
Alopecia Areata
Childbirth - When a women is
pregnant, more of her hairs will be growing. However, after a woman
delivers her baby, many hairs enter the resting phase of the hair cycle.
Within two to three months, some women will notice large amounts of hair
coming out in their brushes and combs. This can last one to six months,
but resolves completely in most cases.
High Fever, Severe Infection, Severe Flu - Illnesses may cause hairs to
enter the resting phase. Four weeks to three months after a high fever,
severe illness or infection, a person may be shocked to see a lot of hair
falling out. This shedding usually corrects itself.
Thyroid Disease - Both an over-active thyroid and an under-active thyroid
can cause hair loss. Your physician can diagnosis thyroid disease with
laboratory tests. Hair loss associated with thyroid disease can be
reversed with proper treatment.
Inadequate Protein in Diet - Some people who go on crash diets that are
low in protein, or have severely abnormal eating habits, may develop
protein malnutrition. The body will save protein by shifting growing hairs
into the resting phase. Massive hair shedding can occur two to three
months later. Hair can then be pulled out by the roots fairly easily. This
condition can be reversed and prevented by eating the proper amount of
protein and, when dieting, maintaining adequate protein intake.
Medications - Some prescription drugs may cause temporary hair shedding.
Examples include some of the medicines used for the following: gout,
arthritis, depression, heart problems, high blood pressure, or blood
thinner. High doses of vitamin A may also cause hair shedding.
Cancer Treatments - Some cancer treatments will cause hair cells to stop dividing. Hairs become thin and break off as they exit the scalp. This occurs one to three weeks after the treatment. Patients can lose up to 90 percent of their scalp hair. The hair will regrow after treatment ends. Patients may want to get wigs before treatment.
Birth Control Pills - Women
who lose hair while taking birth control pills usually have an inherited
tendency for hair thinning. If hair thinning occurs, a woman can consult
her gynecologist about switching to another birth control pill. When a
women stops using oral contraceptives, she may notice that her hair begins
shedding two or three months later. This may continue for six months
when it usually stops. This is similar to hair loss after the birth of a
child.
Low Serum Iron - Iron deficiency occasionally produces hair loss. Some
people don't have enough iron in their diets or may not fully absorb iron.
Women who have heavy menstrual periods may develop iron deficiency. Low
iron can be detected by laboratory tests and can be corrected by taking
iron pills.
Major Surgery/Chronic Illness - Anyone who has a major operation may
notice increased hair shedding within one to three months afterwards. The
condition reverses itself within a few months but people who have a severe
chronic illness may shed hair indefinitely.
Fungus Infection (Ringworm) of
the Scalp - Caused by a fungus infection, ringworm (which has nothing to
do with worms) begins with small patches of scaling that can spread and
result in broken hair, redness, swelling, and even oozing. This contagious
disease is most common in children and oral medication will cure it.
Hair Pulling (Trichotillomania) - Children and sometimes adults will twist
or pull their hair, brows or lashes until they come out. In children
especially, this is often just a bad habit that gets better when the
harmful effects of that habit are explained. Sometimes hair pulling can be
a coping response to unpleasant stresses and occasionally is a sign of a
serious problem needing the help of a mental health professional.
NUTRIENTS, DAILY AMOUNTS, AND APPLICATIONS
MEDICAL ALERT!
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