Nevus (Naevus, Plural. Naevi)

Nevus (Naevus, plural Naevi) is a birthmark: a clearly visible formation on the skin that a person has from birth. There are many different types of nevus. Some, including strawberry nevus and flaming nevus, form from small blood vessels (see Hemangioma). Strawberry nevus (strawberry naevus or strawberry mark) is a red formation raised above the surface of the skin; usually located on the skin of the face and grows rapidly during the first month of a child's life. These birthmarks dissolve slowly and disappear spontaneously between the ages of five and ten years.

A cavernous hemangioma (port-wine stain) (or capillary hemangioma (capillary naevus)) is a permanent purple-colored birthmark that can appear on the skin of any part of the body, but most often it forms on the upper half. Laser treatment helps reduce the intensity of its coloring. Sometimes cavernous hemangioma is limited to the area of ​​innervation of the 1st branch of the trigeminal nerve, for example, in Sturge-Weber syndrome (see Angioma).

Relatively often, a colorless or white halo forms around ordinary pigmented nevi (especially on the trunk, where a halo naevus forms). The pigmented nevus disappears within several months, after which the colorless halo surrounding it also resolves.

Blue naevus is a small bluish-grayish papule, already present at birth or appearing somewhat later, mainly on the extremities. Its development into malignant melanoma is extremely rare.

See also Nevus pigmentosa.

Nevus (Naevus, Pl. Naevi): Birthmarks and their varieties

A nevus, also known as a birthmark, is a clearly visible growth on the skin that is present in a person from birth. There are many different types of nevi, each of which has its own characteristics and characteristics. In this article, we will look at some of the most common types of nevi and their characteristics.

One type of nevus, known as a strawberry nevus or strawberry mark, forms from small blood vessels, also known as a hemangioma. This type of nevus is a red formation raised above the surface of the skin. It usually appears on the face and grows rapidly during the first month of a baby's life. However, these birthmarks dissolve slowly and disappear spontaneously between the ages of five and ten years.

Another type of nevus, known as a cavernous hemangioma or port-wine stain, is a permanent purple-colored birthmark. It can appear on the skin of any part of the body, but most often forms on the upper half of the body. Laser treatment can help reduce the color intensity of such a nevus. Sometimes cavernous hemangioma is limited to the area of ​​​​innervation of the 1st branch of the trigeminal nerve, especially in Sturge-Weber syndrome.

It is also worth mentioning pigmented nevi, around which a colorless or white halo sometimes forms. This is especially common for nevi located on the trunk and is called halo naevus. The pigmented nevus gradually disappears over several months, and the colorless halo surrounding it also resolves.

A blue nevus is a small bluish-grayish papule that is already present at birth or appears later, usually on the extremities. Although quite rare, this type of nevus can progress and become malignant melanoma.

Please note that there are other types of nevi that were not mentioned in this article. It is important to remember that most nevi are harmless and do not require treatment. However, if you have doubts or changes in the nevus, it is recommended to consult a dermatologist for diagnosis and determination of further actions. I hope this article about nevi (Naevus) was useful. If you have any additional questions, do not hesitate to ask your dermatologist, who can provide you with additional information and recommendations.

Please note that the information provided in this article is not a substitute for medical advice or professional opinion.

Nevus is a birthmark. This is a clearly visible subcutaneous formation on human skin. It is formed immediately at birth and remains on the body forever. Nevi come in various shapes and sizes. They are most often found in areas exposed to sunlight, areas exposed to winds, and on exposed parts of the body.