How to treat pilonidal nevus

A hairy epidermal nevus is actually what we call a pigmented nevus. This type of pigmented mole often occurs in adolescence, and often grows on the shoulders and chest. People say that we should be "young people with moles", but too many moles will not look good. This type of mole is different from ordinary moles. Ordinary moles will not grow. If you don’t stimulate it, it will remain the same for life and will not cause any harm to the body. Pilar epidermal nevus still needs treatment. How should it be treated?

Pigmented piloepidermal nevus: also known as Becker nevus, more common in adolescents. The lesions often occur on the shoulders, scapula area and chest. The lesions initially appear as light brown and brown patches, the size of a palm or larger, with clear boundaries and irregular borders. Many coarse hairs appear several years after the lesions occur. The skin lesions develop gradually with age and become stable in adulthood.

Symptoms and signs of pigmented hairy epidermal nevus: It starts in childhood, becomes increasingly obvious with age and after sun exposure, and is an irregular, macular pigmentation. It often occurs in the shoulder, chest or scapula area, but can also occur in other parts of the body such as the forearm, wrist, face and neck. The new pigmented spots may merge with each other and may be as big as a palm or larger. Coarse hair appears after 1 to 2 years. The skin texture in the center of the mole is slightly thicker, while the edges remain unchanged. The border is irregular and map-like. Sometimes moles are not obvious and can only be detected by careful comparison with symmetrical parts. The skin lesions may be combined with other intradermal nevi or epidermal nevi. Differential diagnosis: 1. Café au lait spots

The number of basal melanocytes is normal or slightly increased, and the basal pigment increases.

2Blue nevus

Melanocytes are located deep in the dermis or can extend to the subcutaneous fat. Melanocytes are dendritic and spindle-shaped.

3. Mongolian Spots

There are scattered dendritic melanocytes between the collagen fiber bundles in the middle dermis.

Treatment method: The treatment principle is to use the laser to burst huge energy in an instant to act on the pigmented tissue, so that the pigment is broken and decomposed, swallowed by macrophages, and discharged from the body through lymphatic circulation, thereby achieving the purpose of removing pigment.

Laser treatment is currently the most ideal method. Long-pulse emerald laser (wavelength 755nm) can treat pigmented piloepidermal nevus. The success rate of treating pigmented piloepidermal nevus is 50% after 4 to 8 treatments. Possible side effects include scar formation and depigmentation. Some scholars also believe that Er:YAG laser (wavelength 2940nm) is more effective than Q-switched 1064nm Nd:YAG laser in treating pigmented pilonidal nevus.