Vitiligo Disease

There is a close relation between sunlight and skin care. Premature aging and skin cancer are two man conditions due to sun light.

Sun light is composed of different type of rays. These light are  differentiate from each other on the basis of their wave length.
Today most malicious rays present in sunlight is uvb light and uva radiation.
Both these damage genome and but in different ways, uvb damage DNA directly whereas uva indirectly.  
Why today the issue about uvb and uva are more high lighted as compare to the past.
Answer is simple one, due to the decrease in the thickness of ozone layer.

UVB light

These rays poses wave length ranger from 280nm to 315nm. Due to the shorter wave  length these have higher frequency and highly energetic rays.
These are the tanning radiations of sun.
It does not penetrate deeper into skin and affect epidermis (outer layer of skin).
When uvb light penetrate into skin it turns into energy. This is the reason that it causes tanning and when sun light contain sufficient amount of uvb light it causes burning in skin.
The intensity of uvb light is not stable and vary with seasons and time. Its strength is on its peak at extreme noon  hours of summer.

UVB Treatment

UVB light is not only hazardous to health but use in several  medical therapies for the cure of different disease and conditions.
It is specially used for the treatment of chronic skin conditions like vitiligo, psoriasis and eczema etc.
Vitiligo is a loss of pigmentation of skin. In treatment of vitiligo uvb treatment is used to enhance the pigmentation of skin.
In psoriasis growth and die cycle time of skin cells decreases to about 6 days. These dead cells instead of leaving skin, stuck up the skin surface. And an inflammation developed in skin. UVB is an effective treatment of skin and slow down the rapid growth of skin cells.

UVA Light

It is less hazardous as compare to uvb rays. Lies between wave length ranges 315nm to 400nm. Its strength in sunlight no longer remains variable. It causes brownish shade of skin when exposed to uva light. It is due to the uva that our skin becomes brown when exposed to uva light. Its energy and frequency is lower as compare to the uvb light. It is familiar regarding pre mature aging.

PUVA Treatment

PUVA treatment is rapidly being popular for many skin diseases. In this mode of treatment first affected skin is sensitized and then exposed to uva radiations.  

Pigmentation is the most common skin care problem, a special focus for skin care industry. Daily dozens of different skincare products are introduced in market to counter such skin problems. If we look at the reason behind the pigmentation disorders, autoimmunity, inheritance factors and sun light  is a prominent source which cause different pigmentation disorders.

No doubt  sun is in very favor of  human life. It encourages our metabolism and promotes the formation of the vital vitamin D, calcium for the building and thus to strengthen the bone is needed. The metabolism is stimulated, the sun’s rays make active and lift the mood. But the sun also has its dark side. Let us excessively from her, the UV rays from the skin but powerful add.

 If the skin in the sun slowly brown, then this is the most natural thing in the world. Because the tan offers protection against both UVA and UVB rays of the sun.
UVA rays penetrate deep into the skin and brown quickly. In excess it can be enjoyed allergies and cause premature skin aging.
UVB rays penetrate less deeply and slowly turn brown. But here is an "excess" is not without success. Painful sunburns and long-term potential serious damage to the skin threatening.

Children are particularly vulnerable. Children’s skin is much thinner and more sensitive to  sunlight than the skin of adults. I think it is because of the fact that  natural self-protection  such as pigmentation  process or the protective acid, are not yet fully developed. In addition, normally it has been observed that children are particularly frequent and long stay outdoors. There are studies that show that every sunburn in childhood the risk of skin cancer as an adult cancer increases. Therefore, a comprehensive sun protection is essential.

A chronic skin condition  which is actually a depigmentation  in skin called Vitiligo.  
Vitiligo is a serious pigmentation disorder. A huge population is suffering from this skin condition that only in USA about influenced by pigmentation disorder.

Most of the people did not know more about the word pigmentation regarding skin.

Pigmentation Disorder:

A coloring producing process of our skin. In all pigmentation process a disturbance occurs in skin coloration and white or dark spots appear on skin. Pigmentation in skin normally of two type one is depigmentation and second one hyper-pigmentation. 
Depigmentation is characterized by the white spots on skin and skin condition Vitiligo also comes under the hood of depigmentation problems of skin.
Our skins upper layer epidermis contains skin cells called melanocytes which generate a substance coloring substance called melanin. If melanocytes produce a little amount of melanin it causes  light skin. In vitiligo white patches appear on skin.
 
Most of the hyper-pigmentation problems occurs due to the uv radiations. These rays cause aging of skin and  blood vessels  expand  and causes red coloration which become an age spots due the excessive production of melanin in it.
So excess of  melanin in skin causes darken. Hence melanin plays a vital role in the pigmentation problems.

Vitiligo Causes

Hereunder we mentioned some famous theories regarding Vitiligo causations.

1. Some critical changes in  immune system that lead to the destruction of melanocytes.
2. An abnormal functioning of some nerve cells that produce a toxic material which damage melanocytes.
3. Most energetic uv rays from sun or some other resources may destroy pigment producing cells and a depigmentation spots appear.
4. Due some toxic materials in human body a self destruction of  skin coloring cells take place.
5. Depigmentation problems often runs in family, mean involvement of genetic factor.