Halo nevus
| Halo nevus | |
|---|---|
 |
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| Classification and external resources | |
| Specialty | Lua error in Module:Wikidata at line 247: invalid escape sequence near '"^'. |
| ICD-10 | I78.1, D22 (ILDS D22.L34) |
| ICD-9-CM | 448.1, 216.0-216.9, 757.32 |
| ICD-O | 8723/0 |
| OMIM | 234300 |
| DiseasesDB | 8333 |
| eMedicine | derm/174 |
| Patient UK | Halo nevus |
| MeSH | D009508 |
Halo nevus (also known as "Leukoderma acquisitum centrifugum," "Perinevoid vitiligo," and "Sutton nevus"[1]:689) is a mole that is surrounded by a depigmented ring or 'halo'.
Background
Halo nevi are also known as Sutton's nevi, or leukoderma acquisitum centrifugum. Halo nevi are named such because they are a mole (nevi) that is surrounded by an area of depigmentation that resembles a halo.
Halo nevi are associated with vitiligo. Sometimes the pale (hypopigmented) areas will spontaneous regress, and pigment returns.
Causes
The formation of a halo surrounding a nevi is believed to occur when certain white blood cells called CD8+ T lymphocytes destroy the pigment-producing cells of the skin (melanocytes).[2] The cause for the attack is unknown.[3]
Predilection
Halo nevi are estimated to be present in approximately 1% of the general population, and are found to be more prevalent in people with vitiligo, malignant melanoma,[3] or Turner syndrome.[4] All races and sexes are equally susceptible to this disease, although a familial tendency has been reported. The average age of onset is in a person's teenage years.
Treatment
As halo nevi are only of cosmetic significance, no treatment is required,[5] and patients will be asymptomatic. Although halo nevi are harmless, it is important to monitor the lesion on regular basis.[6] Watch out for any changes in appearance of existing or new halo nevi. If there is any change in appearance or is associated with pain, itch, and infection, a doctor should be consulted immediately to exclude the possibility of melanoma.
See also
References
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- Halo Nevus About.com article
- thenevus.com - Halo Nevus Proves Halos Are Not Just For Angels
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- ↑ Halo Nevis at eMedicine
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