vitiligo is rather triciky and chronic skin conditon. It is difficult to treat this skin condition because of the fact that its real causes are not fully know to any dermatologist.
Furthermore as written on http://www.vitiligoguide.com/vitiligo-cure/ that no one can halt or stop this skin condition. Mean no treatment or medicine can cure root causes of this pigmentation disorder.
One can only get pigmentation back on his affected area by re-pigmentation in skin.
Hi,
It would be best to consult a skin specialist and decide about the plan of management in your grandson's case according to the sites of involvement and extent of involvement.
'The main goal of treating vitiligo is to improve appearance. Therapy for vitiligo takes a long time—it usually must be continued for 6 to 18 months.
Current treatment options for vitiligo include medical - topical steroid therapy , oral and topical psoralen photochemotherapy and depigmentation using hydroquinone; surgical-autologous skin grafts and micropigmentation, and adjunctive therapies- sunscreens and cosmetic products.'
You could read more about this condition at the following links -
http://www.medicinenet.com/vitiligo/article.htm
and
http://en.wikipedia.org/wiki/Vitiligo
Let us know if you need any further information.
Regards.