CAN LEUKODERMA/VITILIGO BE SPREAD to WHOLE BODY

Hi

A 29yrs guy has approached my sis for marriage proposal. She liked him very much but in his first meeting he told her that he has "LEUKODERMA" VITILIGO on inner side of left arm. I want to ask that

- whether it can spread to his entire body in future ? Are there any specific types of  vitiligo ?

- Are there any chances that this disease can be stopped  to his arm only ?

- To treat this disease does the period matter that when it appeared first   ?

- is there  any cure in allopathy, homeopathy or ayurvedic that reduces its extent or white patches ? and if it gets cured will there be any chance of its recurrence.....

pls reply as she doesnt wan't to say no to him ..but at the same time she is also worried that what if it get transfer to further generation .