Clark's Nevus - Clark's Nevus Symptom, Causes & Treatment
What is Halo Nevus
A halo nevus is a mole that is pink or brown surrounded by an area of white or light skin. It looks like a bull's-eye. Atypical moles also referred to as Clark's nevi or dysplastic nevi are moles that are considered to be precancerous or more likely to turn into melanoma than regular moles. Halo Nevus is defined as a usually benign, sometimes multiple, melanotic nevus that involutes, producing a pigmented center that is surrounded by a uniformly depigmented zone. Also called leukoderma acquisitum centrifugum , Sutton's disease.
Causes of Halo Nevus
The cause of the Halo Nevus is unknown. Halo nevi are usually single but may be multiple. They can develop anywhere on the body but are seen most frequently on the trunk.
Treatment of Halo Nevus
The chief diagnostic consideration in patients with halo nevi is melanoma that is undergoing regression, although making this distinction is not usually difficult. Patients should be taught self-examination to detect changes in existing moles and to recognize clinical features of melanomas.
Normally, no treatment is required. Atypical moles should be removed immediately if they are changing color, shape or size over a period of weeks to months.