How You Get Alopecia
Alopecia or hair loss is a very common problem and seen in people every now and then. But hairfall is not actually of only one type. There are many types of alopecia. But in this article, we will be discussing two of the most types as well as mechanism of how you get that two types of alopecia.
What is Alopecia Areata (bald spot)?
This is one of the most commonly discussed types of Alopecia, which is commonly known as spot baldness. This type of alopecia affects only a certain area of your scalp and leaving patches over or only one path over it. Further subtypes such as alopecia totalis (the loss of hair from whole of the scalp), or alopecia universalis (loss of hair from whole of the body) are synonymous differing only in the amount of area affected on your skin.
How do you get Alopecia Areata?
Alopecia areata affects almost equal number of men and women, meaning that both the sexes are at same risk of having alopecia areata. Likewise, you can develop it at any age. Mostly, alopecia areata affects people at the age ranging anywhere between twenty to forty years.
The ultimate reason why you get alopecia areata is quite exhausting. It is an autoimmune disease, wich means that your body itself is mistaken to attack its own cells. External factors that cause alopecia areata are not really known. Some dermatologists talk about the psychological stress to be one of the most important cause of it. Yet there are no well established evidences or experiments that provide a reliable and firm conclusion due to conflicting results of the published evidences. Despite this, there is a possibility that a number of external factors together can cause alopecia areata.
On the other hand, genetic basis of alopecia areata is quite firm and high concordance rate of the disease in identical twins supports the idea. Moreover, in affected individuals with disease onset before thirty years of age have a high rate of positive family history. This means that genetic factor is important along with other possible factors that are probably not yet recorded.
Androgenetic Alopecia (Pattern Hair Loss)
This is another common type alopecia that causes people to worry more about their scalps before the age. Androgenetic Alopecia is also referred to as pattern hair loss or common balding. Males and females both have a distinct pattern of developing the bald scalp in androgenetic alopecia. And this is the reason why this is specified as male pattern and female pattern. Though, males can develop have a female pattern and similarly females can go through a male pattern. In this type of alopecia, production of hair fibers is gradually declined over a period of time.
How do you get Androgenetic Alopecia?
Androgenetic alopecia affects a great number of men and is comparatively less in women. The regional and racial differences is of remarkable importance as white men and women are more prone to androgenetic alopecia than brown or black. Also, majority of individuals with androgenetic alopecia start to shed their hair in the third decade of their age.
The main and accepted cause of androgenetic alopecia (as the name suggests) is the metabolite of testosterone (the male sex hormone) called dihydrotestosterone or DHT. Women have testosterone in trace amounts in their body but that is sufficient enough to cause pattern hair loss in women. According to American Hair Loss Association, the blood testosterone levels in women may be in normal range, but your body’s chemistry and sensitivity decides how to react to this small amount of DHT for hair loss.
Another more visible and apparent difference in balding of women and men is that majority of women have a diffuse hair thinning which occurs on whole of the scalp, while men tend to a specified pattern and area of baldness which predictably progresses with time.