Vitiligo is a common disorder of your immune system that result in white Pathches on the body and for which currently no acceptable permanent means to stop this process. When we say treating vitiligo, it means eliminating the white spots weather root cause is addressed or not.
The following are the possible treatment options for vitiligo skin disorder.

Treatment of Vitiligo

Psoralen photochemotherapy
Surgical Therapy
Autologous skin grafts
Skin grafts using blisters
Autologous melanocyte transplants
Totooing
Home Remedies
Alternate treatments
Oral therapies with natural Psoralen
Topical therapies using natural Psoralen
Homeopathic
Ayer Vedic
Prescription Medicine
Topical steroid therapy
Psoralen photochemotherapy

Causes of Vitiligo

There are many theories regarding the cause of Vitiligo but the real reseon is not certainly known. According to one theory, people with vitiligo develop antibodies that, turn up them and instead of protecting their own melanocytes, it destroy. There is another theory according to which the melanocytes somehow attack and destroy themselves. Finally, some people with Vitligo have reported that a single event such as severe sunburn or an episode of emotional distress is the main cause of this order. Scientifically, events of this nature have not been accepted as the main cause of vitiligo..

Causes of Vitiligo

Types of Vitiligo:

Localized Vitiligo:
Focal pattern vitiligo, Segmental pattern vitiligo
Generalized Vitiligo:
Acrofacial vitiligo, Vulgaris Vitiligo, Universal vitiligo

source:http://www.antivitiligo.com/

My suggestions

Herbal treatments have been used for many years for treating vitiligo. Herbal treatments general involve a comprehensive treatment not only of the symptoms, but of suspected real causes.
I think that tropical treatment is best for skin disease because it is economical,fast and has not side effects.