Warty nevus of the scalp
What is a warty nevus? Than this dermal protrusion is dangerous? These and other questions concerning the aforementioned disease will be answered below.
A warty nevus is a benign formation on the skin. It consists of new cells that contain a large amount of a pigment such as melanin.
The word "nevus" is of Latin origin naevus. Translated into Russian it sounds like a "mole".
In general, there are many different types of spots on the skin( birthmarks).They can be congenital, that is, noticeable from the first days of life, and acquired, that is, they appear later. Classification of such formations is very extensive. However, the most common of these are: papillomatous( or warty nevus of the scalp), intradermal and dysplastic.
Why does a warty nevus form? Many experts note that almost all such formations, including those that appeared with age, are congenital skin defects. According to the scientists, the disorders leading to the development of the tumor appear at the embryonic level.
The main factors of development of such a protrusion include:
- fluctuations of sex hormones( progestins and estrogens) in a pregnant woman;
- infectious diseases of the urogenital system in pregnant women;
- effects on the body of pregnant unfavorable factors;
- genetic disorders.
All these causes can lead to disturbed development of melanoblasts, that is, cells, from which melanocytes are subsequently formed. Subsequently, they accumulate in certain parts of the skin and are converted to non -ocytes. The latter differ from the standard melanocytes with the following features:
- they do not have shoots, due to which the pigment could spread to other cells;
- warty nevus dysplastic is worse than the regulatory systems of the patient's body, however, unlike cancer cells, it has lost this ability not fully.
Other causes of
For what reasons can a warty nevus still appear, the photo of which is presented in this article? Such formation is often due to:
- of hormonal changes in the body. This is especially evident in adolescents.
- Effects of ultraviolet rays on human skin. Frequent and long stays in the sun or sunbeds contribute to the increased growth of pigmented spots.
- Pregnancy. As mentioned above, this is due to the fluctuation of sex hormones.
- Reception of contraceptives.
- Inflammatory and allergic skin diseases( eg, acne, dermatitis, various rashes).
Papillomatous warty nevus on the head
What distinguishes the papillomatous nevus from the others? This is a benign formation that protrudes above the skin, which is very much like a papilloma. Most often this protrusion is located on the head. It can be congenital or acquired.
In view of the fact that the risk of transformation of the papillomatous nevus into melanoma is small, this kind of birthmark is classified as melanoma-invasive. What is the reason for its occurrence? Experts argue that such an education is a genetic feature of a person.
The warty nevus, located on the head, has uneven outlines and a tuberous surface. It rises above the level of the skin and can be completely covered with hairs.
The color of this formation is brown or brown. Sometimes it does not necessarily differ from healthy skin areas. It should also be noted that this formation is single or multiple and often reaches a very large size.
Such a warty nevus is a kind of congenital mole and is almost never transformed into a malignant neoplasm.
So far, experts have not identified the cause of the appearance of this type of birthmarks. Although there is a hypothesis that claims that such a projection over the skin occurs due to genetic disorders.
The intra-nerve nevus has a domed appearance. Sometimes it can be located on the "leg" and in its shape resemble a blackberry.
The color of this formation varies from light to brown or completely black. Its size reaches no more than a few centimeters.
This kind of nevus is plural and single. Most often it is located on the neck and face. In rare cases, this protrusion appears on other parts of the skin.
This formation is very often called an atypical birthmark. It is the precursor of a malignant tumor, that is, melanoma.
It is in the same percentages found in representatives of both sexes. Emerging in 12-15 years, the protrusion continues to grow on the body right up to a very old age, forming new spots.
The age of a person, his gender and the individual perception of UV rays have no effect on the appearance of this formation. They are inherited through an autoimmune channel. With strong exposure to sunlight or artificial ultraviolet, such warts degenerate into melanoma.
There is also a high risk of converting this nevus to a malignant tumor in those who take immunosuppressants.
A typical symptom of this formation is its dual structure. Melanocytic warty nevus very often occurs on the scalp. It looks like a round spot with blurred boundaries, the central part of which is slightly elevated.
This formation can be red-pink or even black-brown in color. Its size reaches 5 mm.
Most often this protrusion manifests itself in multiple ways. In most cases, such spots are located on those parts of the skin that are closed from sunlight( for example, the scalp, lower extremities, back, chest, genitals and buttocks).Very rarely considered melanocytic nevus is formed on the face.
How to cure a warty nevus? Removal - this is the method that traditional medicine and cosmetology offer.
The most popular and affordable way of treating this formation is resection with a surgical scalpel. The main disadvantage of this procedure is that after its implementation, scars and scars remain. In addition, such an operation is rather painful. Although in some cases, including malignant dysplastic nevus, this method is most effective.
Another way to remove moles is cryotherapy. It provides for the use of refrigerants such as liquid nitrogen or dry ice. Under the influence of low temperature, non -ocytes are first frozen and then killed.
Opposite cryotherapy by the way of getting rid of birthmarks is electrocoagulation. Its principle of action is based on cauterization of pigment cells. Such an operation is extremely painful, and therefore requires the use of anesthesia.
Other ways to treat
There are also other ways to treat nevi. These include laser removal and point irradiation. The advantages of such methods are painlessness, speed of the procedure, absence of anesthesia, scars and scars.