Hi there,
I'm a white person and I'm experiencing the same problem. There is a white spot right underneath the nose but it doesn't look that bad but when i don't shave, the white hair starts showing. This kind of disease can happen to anybody but black people of most affected by it. I went to my dermatologist here in Canada and I was told there is no cure for this kind of disease which is called vitiligo. No harm comes from it but if your skins is darker, it will show more and won't look that pretty. It usually starts on small white spots and then it can spread. I was terrified once I was told that and also, I was told to make piece with this disease because there is no cure. However, I've been very lucky. The white stop hasn't grown a bit.
Leucoderma, also known as vitiligo, is a rare skin disease characterized by white spots and patches. The white patch or spot is called as leucoderma and when it occurs without any preceding disease it is called Vitiligo.
Leucoderma in literal term means white skin. This kind of condition is mistaken for another skin disease i.e. leprosy.
Under this skin condition, certain parts of the skin gradually lose color leaving behind white patches. This occurs due to loss of melanin, a dark pigment which gives color to skin. It may begin with a small patch but slowly and steadily spreads throughout the body. This is not a dangerous or contagious skin disease.
The actual cause is still unknown though numerous studies have been conducted on the subject. Some of the perceived causes are emotional stress, hereditary factors, worms, sunburns (See What are the Effects of Sunlight on the Skin?) and physical illness. This skin condition can be aggravated due to diseases like hyperthyroidism, diabetes mellitus, pernicious anemia and Addison's disease.
Some tips to be kept in mind
Avoid stress and try to relax
Do not use hard soaps while bathing
Get a sun bath in the early hour for 20-30 minutes
Avoid cosmetics like cream, powder and other triggering agents.
Increase iron deficiency by eating foods such has meat, liver, cereals, beans, lentils and green leafy vegetables.
Avoid citrus fruits, tamarind, fish, lobsters, crabs and prawns.
Sodium or salt consumption should be completely stopped during the leucoderma treatment.