What is the cause of halo nevus?
A halo nevus appears when the body has an immune response around an existing mole. Why this happens continues to be studied. Immune cells come into the area around the nevus cells and clear out any melanocytes, leaving the area unpigmented.
How common is halo nevus?
Halo naevi (US plural, nevi) are not uncommon, with an estimated prevalence of 1% of the white-skinned population. They are usually seen in healthy children or young adults of either sex. They can occur at an older age too.
How long does it take for a halo nevus to go away?
Observations have showed that the halo nevi last for 10 years or more, but a large subgroup passes through various stages to finally regress completely. The process takes approximately 8 years on average.
Is halo mole vitiligo?
Halo nevus (HN) has been shown to be associated with vitiligo, but no standard signs are currently available to identify HN patients at risk of vitiligo, and the relevant data obtained in previous studies are somewhat conflicting. This study aimed to identify factors affecting the presence of vitiligo in HN patients.
What are Halo nevi and how are they treated?
Halo nevi develop spontaneously, usually in adolescence, on the trunk, but sometimes on the palms and soles. A person can have just one halo nevus or several halo nevi. Halo nevi are usually benign. No treatment is necessary if they have a typical appearance, other than reassuring the patient that they are not a concern for skin cancer.
What is a Halo nevus?
A halo nevus appears when the body has an immune response around an existing mole. Why this happens continues to be studied. Immune cells come into the area around the nevus cells and clear out any melanocytes, leaving the area unpigmented.
What does a halo nevi mole look like?
Halo nevi look like regular brown, tan, or pink moles in the center of a circular white patch of skin. They can show up anywhere on the body, but they’re most common on your chest, abdomen, and back. In addition, halo moles are typically only one color and evenly shaped.
Do Halo nevus moles need sun protection?
Make sure you apply sunscreen to your halo nevus whenever you’re outside for more than 15 minutes. The lack of pigment around the mole leaves your skin more vulnerable to sunburns, which can increase your risk of skin cancer. Halo nevi are usually harmless, but they do require a little bit of extra protection from the sun.