5:40 p.m. - 2010-03-21
hair loss and the many ways of it
Alopecia :
The general medical term used to explain hair loss is alopecia.
There are two types of alopecia that are described in the section and diagnostic hospital.
Androgenetic alopecia
Alopecia Areata
hospital
The scalp has around 150 thousand hair, when 25 percent disappears, it may be a bald process.
There are many factors that will cause baldness then be listed.
The sorts of hair loss are :
Androgenetic alopecia : This is the most common kind of hair loss in men. It affects at least 50% of the population aged over 40 years in men and 50 ladies. It attacks 30% of men 30 years, forty percent of men 40 years and 80% of men over sixty five years. It could be due to an inherited sensitivity to a naturally occurring substance called dihydrotestosterone ( DHT ).
Studies of scalp hair from bald and not bald show that in this type of alopecia are high concentrations of 5-alpha-reductase and DHT in the scalp.
The 5-alpha-reductase is an enzyme that catalyzes the conversion of testosterone to DHT and increased DHT is connected with hair loss in men.
baldness male pattern starts with a slight reduction of hair at the temples, which increases with time.
Alopecia areata is a type of alopecia that usually happens as plaques on the scalp. In a number of cases the situation may progress to complete loss of head hair ( alopecia totalis ) or complete body ( alopecia universalis ). Affects 1 percent of the populace forty years and is typically refractory to medical care.
Diagnosis
It is important to contact a doctor or dermatologist if you spot the presence of a big loss of hair in order to identify their status.
Its diagnosis is necessary to :
Exploring visual shows the scalp to determine if found in one or more areas of baldness.
Patient History : Performed a list of questions like : when did the loss of hair, lost hair type, location, medicines taken, family history of hair loss and hair daily care ( for example types of shampoos, dyes, curlers or other hair clips ).
Hair pull test : take a strand between your fingers and pull gently. It is repeated in a few sections, several times.
Quantitative analysis of shed hair : loose hair is collected during the period of a week, and has got the average detached hairs per day. This gives information about the force of his alopecia.
microscopic investigation into hair stems and bulbs : to establish if the hair has an ordinary structure.
ETIOLOGY
The reasons for hair loss are a lot of, however nowadays the key ones are :
bad nutrition
stress
Other :
illnesses : like thyroid and syphilis
infective processes
drug interactions like complications of chemotherapy ( chemical exposure ), the effect of high batches of vitamin A, drugs used to lower cholesterol, and anti-thyroid
congenital factors
as an unwanted effect of using prescribed medicine or prescription
Iron deficiency ( anemia )
In ladies, baldness may be due to :
post-childbirth or termination
post-menopausal stage, by reduction of female hormones
daily utilization of buckles or strap-shaped bras that can cause weakening of the roots.

PREVENTION AND TREATMENT
Once the diagnosis by the doctor or skin specialist will decide categorical treatment for each kind of baldness.
these are different types of drugs and associations : There are 2 sorts of alopecia in topical drug treatment produced some results :
Androgenetic alopecia
the sole topical medication which has proven effective is minoxidil. In girls, the rate of reply to treatment for 32 weeks with minoxidil solution 2%, was between 44% and 63%. Hair growth showed variable power. In men, the rate of response was 40 percent after 12 months of treatment. At first, it was advised that its effect was due to local vasodilation, but other information suggest it has direct effects on the follicle and on keratinocytes, inflating glycosaminoglycan synthesis. Minoxidil lotion is applied to two percent, one ml 2 times each day. You should not spend 2 ml per day to prevent the occurrence of systemic effects. Local effects include skin sensitiveness to the drug or the vehicle of the same ( lotion ). When treatment is suspended and recommenced the process bald.
Alopecia Areata
Variable was used successfully with intralesional administration of corticosteroids. Is presently gauging the value of some topical photosensitizer, such as anthralin and diphencyprone.
Source: hair loss news
hair loss and the many ways of it

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