Moles (Nevi)

What Are Moles?

Moles, or known scientifically as nevi or nevus in its singular form are very common growths in humans. They may already exist at birth, or may have grown through life. Mole growth typically changes throughout a person’s life. Growth is increases during childhood and reaches its peak during adolescence and then drops as we grow into adulthood. Moles change throughout childhood as well as pregnancy.

Moles may come in different shapes, sizes, colors, and may appear on any part of your body. A mole is composed of melanocytes, or skin cells that produce dark pigments called melanin.

Most moles change and grow as we also grow. They could start as flat brown spots, and then later on, darken or grow hairs.

Some moles are already present at birth. These are called congenital nevi, and are seen on more than 1% of newborns. Most are small and barely visible, but it may also cover most of the skin surface. The large nevi are at risk for possible malignant changes.

Another type of mole is the dysplastic nevus. It is quite common and can be identified because it is broader and larger than ordinary moles. It also has irregular colors and shapes. People who have this type of moles are likely to develop melanoma.

Changes in moles are normal, and most are not cancerous. However, if the changes seem out of the ordinary, you should consult a dermatologist. Depending on the severity of the observed changes, you may be recommended to have a biopsy. The doctor will re move a part of the whole mole for evaluation.
Source:

•  ^ nevus at Dorland’s Medical Dictionary