Indian Vitiligo Association

Indian Vitiligo AssociationIndian Vitiligo AssociationIndian Vitiligo Association
Home
About Us
Our Impact
Gallery
Vitiligo
  • About Vitiligo
  • Treatment Options
  • Vitiligo Burden
  • World Vitiligo Day
  • Famous Vitiligans
Physicians
  • Halo Nevus
  • Koebner's Phenomenon
  • Hair involvement
  • VKH Syndrome
How to help?
  • Donate Today
  • Become a member
  • Sponsorship Opportunities

Indian Vitiligo Association

Indian Vitiligo AssociationIndian Vitiligo AssociationIndian Vitiligo Association
Home
About Us
Our Impact
Gallery
Vitiligo
  • About Vitiligo
  • Treatment Options
  • Vitiligo Burden
  • World Vitiligo Day
  • Famous Vitiligans
Physicians
  • Halo Nevus
  • Koebner's Phenomenon
  • Hair involvement
  • VKH Syndrome
How to help?
  • Donate Today
  • Become a member
  • Sponsorship Opportunities
More
  • Home
  • About Us
  • Our Impact
  • Gallery
  • Vitiligo
    • About Vitiligo
    • Treatment Options
    • Vitiligo Burden
    • World Vitiligo Day
    • Famous Vitiligans
  • Physicians
    • Halo Nevus
    • Koebner's Phenomenon
    • Hair involvement
    • VKH Syndrome
  • How to help?
    • Donate Today
    • Become a member
    • Sponsorship Opportunities
  • Home
  • About Us
  • Our Impact
  • Gallery
  • Vitiligo
    • About Vitiligo
    • Treatment Options
    • Vitiligo Burden
    • World Vitiligo Day
    • Famous Vitiligans
  • Physicians
    • Halo Nevus
    • Koebner's Phenomenon
    • Hair involvement
    • VKH Syndrome
  • How to help?
    • Donate Today
    • Become a member
    • Sponsorship Opportunities

physician research

Halo nevus

HN and vitiligo are probably two distinct entities involving separate, independent  pathways leading to depigmentation, but a possible overlap might exist in a subset of patients. An immune response to nevocytic antigens that spills over to melanocytes can be speculated because of the frequency of HN in vitiligo patients as compared to the general population. Whether the presence of HN represents a risk factor for onset of vitiligo (Barona MI, Arrunategui A, Falabella R, Alzate A (1995)) or a sign of progression of active vitiligo is not yet settled.


The loss of pigmentation in HN is thought to be ant i-inflammatory/immunological process. The usual explanation of the depigmented ring is that the immunologic response, fi rst directed against the nevus melanocytic antigen(s), outgrows its first target to cause the loss of normal melanocytes of the surrounding skin. The halo around the nevus is always remarkably round or oval. This geometrical figure has led some authors to suggest a phenomenon beginning at the centre where the nevus is situated, and then spreading centrifugally around (De Vijlder HC, Werterhof W, Schreuder GM et al (2004)


Copyright © 2012 Indian Vitiligo Association - All Rights Reserved. Disclaimer: No information on this site is intended to be a substitute for professional medical advice, diagnosis, or treatment and is only meant for educational purposes. Always seek the advice of your physician or another qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.

  • About Us
  • Donate Today
  • Become a member

Powered by your love & support

This website uses cookies.

We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.

DeclineAccept