Here you go, darling:
Baldness is a trait which involves the state of lacking hair where it often grows, especially on the head. The most common form of baldness is a progressive hair thinning condition called androgenic alopecia or 'male pattern baldness' that occurs in adult human males and some primate species. The severity and nature of baldness can vary greatly; it ranges from male and female pattern alopecia (androgenetic alopecia, also called androgenic alopecia or alopecia androgenetica), alopecia areata, which involves the loss of some of the hair from the head, and alopecia totalis, which involves the loss of all head hair, to the most extreme form, alopecia universalis, which involves the loss of all hair from the head and the body. Treatment for alopecia has limited success. The more hair lost, the less successful the treatment will be.
The most noticeable part of human hair is the hair on the head, more prominent in some than others, which is more dense than most hair found elsewhere on the body. The average human head has about 100,000 hair follicles.[1] Each follicle can grow about 20 individual hairs in a person's lifetime.[1] Average normal hair loss is about 100 strands a day.
Incidence of pattern baldness varies from population to population based on genetic background. Environmental factors do not seem to affect this type of baldness greatly. One large scale study in Maryborough, in central Victoria (Australia) showed the prevalence of mid-frontal hair loss increases with age and affects 57% of women and 73.5% of men aged 80 and over.
Male pattern baldness is characterized by hair receding from the lateral sides of the forehead, known as "receding hairline" or "receding brow." An additional bald patch may develop on top (vertex). The trigger for this type of baldness (called androgenetic alopecia) is DHT, a powerful sex hormone that adversely affects the hair and prostate.[2]
The mechanism by which DHT accomplishes this is not yet understood. In genetically-prone scalps, DHT initiates a process of follicular miniaturization. Through the process of follicular miniaturization, hair shaft width is progressively decreased until scalp hair resembles fragile vellus hair or "peach fuzz" or else becomes non-existent. Onset of hair loss sometimes begins as early as end of puberty, and is mostly genetically determined. Male pattern baldness is classified on the Hamilton-Norwood scale I-VIII.
It was previously believed that baldness was inherited from a person's maternal grandfather. While there is some basis for this belief, both parents contribute to their offspring's likelihood of hair loss. Most likely, inheritance is technically "autosomal dominant with mixed penetrance" (see 'baldness folklore' below)
There are several other kinds of baldness:
* Traction alopecia is most commonly found in people with ponytails or cornrows who pull on their hair with excessive force. Wearing a hat shouldn't generally cause this, though it is a good idea to let your scalp breathe for 7 hours a day[citation needed].
* Traumas such as chemotherapy, childbirth, major surgery, poisoning, and severe stress may cause a hair loss condition known as telogen effluvium.[3]
* Some mycotic infections can cause massive hair loss.[4]
* Alopecia areata is an autoimmune disorder also known as "spot baldness" that can result in hair loss ranging from just one location (Alopecia areata monolocularis) to every hair on the entire body (Alopecia areata universalis).
* Localized or diffuse hair loss may also occur in cicatricial alopecia (lupus erythematosus, lichen plano pilaris, folliculitis decalvans, central centrifugal cicatricial alopecia, postmenopausal frontal fibrosing alopecia, etc.). Tumours and skin outgrowths also induce localized baldness (sebaceous nevus, basal cell carcinoma, squamous cell carcinoma).
* Hypothyroidism can cause hair loss, especially thinning of the outer third of the eyebrows
* Temporary loss of hair can occur in areas where sebaceous cysts are present for considerable duration; normally one to several weeks in length.
_________________
Hope this helps ya.
@}-----
2007-02-13 10:20:22
·
answer #1
·
answered by Anonymous
·
0⤊
2⤋
Do you wear a baseball cap or other head covering all the time? Many people who do go prematurely bald. The oils and grease from your hair get clogged in the pours and it kills the hair follicles off. Case in point... I am a full haired man age 51... My twin is almost completely bald... Only difference was he always wore a baseball cap.
2007-02-13 10:19:39
·
answer #2
·
answered by Dan J 4
·
0⤊
0⤋
Provided your not sick or taking something wired.
If your mothers farther is bald then that is where the gene came form to cause you to go bald too.
I'm doomed to lose my hair for that reason.
2007-02-13 10:22:58
·
answer #3
·
answered by Eyerish 5
·
0⤊
0⤋
Male pattern baldness genetics inherited from your mother. There's a good chance your maternal grandfather and uncles were/are bald.
2007-02-13 10:19:09
·
answer #4
·
answered by Memo Erdes 3
·
0⤊
2⤋
u could be going bald of old age or if ur under 30 then it could be an early sign of diebetes((how ever u spell it))...Good Luck With That...Much♥
2007-02-13 10:18:07
·
answer #5
·
answered by ♥Deli in PINK♥ 1
·
0⤊
0⤋
streess....maybe!!!
wait , wait !!! dont panic just yet i was listening to the news yesterday and they announce that research indicated that woman are more attracted to bald men because they tend to have a better sexdrive than men with a complete batch of hair.
2007-02-13 10:17:12
·
answer #6
·
answered by A. RMZ 4
·
0⤊
0⤋
Because your'e too smart and you think too much. Also because it's genetic coming from the mother's side. Have you tried Rogaine? My uncle used it and grew quite a bit of hair with it.
2007-02-13 10:17:43
·
answer #7
·
answered by fraunkensteen 2
·
0⤊
0⤋
it may be genetic,if not possibly stress or a reaction to medication you are taking.if you wear a hat all the time such as a baseball cap it may be the cause also.if you do drugs it may also cause baldness.change what you can and see what happens,also massage your scalp improved circulation may help.good luck.
2007-02-13 10:21:27
·
answer #8
·
answered by dixie58 7
·
0⤊
2⤋
Heredity. I bet your mothers father was bald and your her second child..
2007-02-13 10:18:52
·
answer #9
·
answered by don 6
·
0⤊
2⤋
Because you spun around on your head too much when you were break dancing.
2007-02-13 10:17:57
·
answer #10
·
answered by Peanut Butter 5
·
0⤊
0⤋