Vitiligo signs include:

• Patchy loss of skin color, which usually first appears on the hands, face, and areas around body openings and the genitals
• Premature whitening or graying of the hair on your scalp, eyelashes, eyebrows or beard
• Loss of color in the tissues that line the inside of your mouth and nose (mucous membranes)

Vitiligo can start at any age, but usually appears before age 30.

See your doctor if areas of your skin, hair or mucous membranes lose coloring. Vitiligo has no cure. But treatment might stop or slow the discoloring process and return some color to your skin.

There is no cure for vitiligo. The goal of medical treatment is to create a uniform skin tone by either restoring color (repigmentation) or eliminating the remaining color (depigmentation). Common treatments include camouflage therapy, repigmentation therapy, light therapy and surgery. Counseling may also be recommended.

The post care treatment varies depending on the type of treatment that is used to treat the disease. 

Since no one knows for certain what causes vitiligo, no one can tell you how to prevent it. In general, it is smart for everyone to practice safe sun exposure habits and to take good care of your skin.