Hi,
You seem to have
poliosis or canities...also called premature greying of hair.Poliosis refers to an patch of white hair. It is due to lack of melanin (pigment) in the hair shafts of the affected area. It is most often seen in scalp hair, but may also affect eyebrows, eyelashes or other sites.
Poliosis may occur because of an inherited defect in melanisation, or because of an autoimmune destruction of the pigment cells at the base of the hair, or because the hair follicles are damaged. Some conditions may be associated with poliosis..like
vitiligo,
piebaldism,some genetic syndromes or
alopecia areat.. And injury,stress,tension,surgery,drugs..etc may be the other causes.
while premature canities (greying of hair) may appear without underlying pathology, it has also been associated with:
pernicious anemia,B12 deficiency,
hyper/hypo-thyroidism.
There is no effective treatment of premature graying of hair. Find out the cause and treat it. Calcium pentothenate may be taken for long time. Application of melatane gel would be helpful.
Avoidance of exposure to sunrays and pollution is needed to prevent the condition.
I hope you got my answer.
Thanks.
Dr. Ilyas Patel MD