Vitiligo may be confused with only one fungal infection and that is T. versicolor. The two can be easily differentiated by a simple KOH test of the superficial skin scrapes. Alternatively one can examine under the Woods lamp.
Even today, the mainstay of treatment for vitiligo, are the psoralens (e.g macsoralen, melanocyl, neosoralen - available in India). They should be taken in local or oral forms, depending upon the extent of the problem. Other medicines improve the results.
I am not sure what Protopic contains. If it contains the steroids, then alone it is not enough.
The Zebra like stripes you mention, appear to be striae (stretch marks). Usually they occur when weight increases rapidly or when the cortisone levels increase. Steroids should never be applied on striae; as they can increase further.