- "Striae" is also a generic term referring to thin or narrow channels, narrow or thin lines or ribbons, especially if some of them align or adjacent.
Stretch mark , also known as striae , is a form of scar tissue on the skin with off-color color. Over time they may decrease, but will not disappear completely. Stretch marks are formed during rapid body growth, such as during puberty or pregnancy. In pregnancy they usually form during the last trimester, and usually in the abdomen, but also commonly occur in the breasts, thighs, hips, lower back and buttocks. This is known as striae gravidarum.
Stretch marks are caused by tearing of the dermis. This is often from rapid stretching of the skin associated with rapid growth or rapid weight changes. Stretch marks may also be affected by hormonal changes associated with puberty, pregnancy, bodybuilding, or hormone replacement therapy.
There is no evidence that the cream used during pregnancy prevents stretch marks. Once they are formed there is no obviously useful treatment, although various methods have been tried.
Video Stretch marks
Signs and symptoms
Striae, or "stretch mark", begins as a reddish or purple lesion, which can appear anywhere in the body, but is likely to appear in places where more fat is stored; the most common places are the stomach (especially near the navel), breast, upper arm, armpits, back, thigh (both inside and outside), hips, and buttocks. Over time, they tend to have atrophy and loss of pigmentation. The affected area appears empty, and soft to the touch.
Stretch marks occur in the dermis, a strong central tissue layer that helps the skin retain its shape. No stretch marks will be formed as long as there is support in the dermis; stretching plays the role in which the sign occurs and to which direction they are running; however, there are a number of contributing factors (see: "Causes", below) for their formation. They can (but not always) cause burning and itching sensations, as well as emotional distress. They do not pose a health risk in and of themselves, and do not compromise with the body's ability to function normally and improve itself, however, they are often considered cosmetic disorders. Young women are generally most affected and often seek treatment for them from dermatologists and after pregnancy.
Maps Stretch marks
Cause
Stretch marks appear to be caused by skin stretching. This is especially true when there is an increase in cortisone.
In other words, elevated cortisone levels can increase the likelihood or severity of stretch marks by reducing skin elasticity; more specifically, it affects the dermis by preventing fibroblasts from collagen formation and elastin fibers, necessary to keep the skin fast growing fast. This can lead to a lack of supporting materials because the skin stretches, and causes dermal and epidermal tears, which in turn can produce scar tissue in the form of stretch marks. This is especially true when there is new tissue growth (which can disrupt the underlying physical support of the dermis or epidermis, by removing support tissue).
Examples of cases where stretch marks are common, also given by Mayo Clinic, include weight gain (in the form of fat and/or muscle), pregnancy, and adolescent growth, although it is also noted that some medications, as well as other medical conditions and diseases, may increase the likelihood of stretch marks appearing. In the case of treatment, the Clinic refers to "corticosteroids, lotions and pills and the use of oral or chronic systemic steroids" as a contributing factor; in the case of medical conditions that may contribute to stretch marks, examples provided include Ehlers-Danlos syndrome, Cushing's syndrome, Marfan syndrome, and "adrenal gland disease".
Pregnancy
Stretch mark pregnancy, also known as striae gravidarum, is a specific form of scarring of the abdominal skin due to rapid uterine expansion as well as sudden weight gain during pregnancy. About 90% of women are affected.
A number of additional factors appear to promote the emergence of stretchmarks: a study of 324 women, performed only after they gave birth, showed that low maternal age, high body mass index, weight gain greater than 15 kg (33 Ib) and higher neonatal. birth weight is independently correlated with the occurrence of striae. Adolescents are found to be at the highest risk of developing severe striae.
This color defect is a symptom of pregnancy caused by tearing of the dermis, resulting in atrophy and loss of rete ridges. These scars often appear as reddish or bluish lines on the abdomen, and can also appear on the breasts and thighs. Some of these striae disappear over time, while others remain as permanent color changes in the body.
Mechanical distension and rapidly growing body areas during pregnancy (such as stomach, breast, and thigh) are most often associated with striae formation. Some people suggest that relaxin and estrogen combined with higher levels of cortisol during pregnancy can lead to accumulation of muocopolysaccharides, which increases the water absorption of connective tissue, making it prime to tear under mechanical stress. There also appears to be a relationship between higher body mass index and in women with larger infants and the incidence and severity of striae. Also, younger women seem to be at higher risk of developing striae during pregnancy.
The prevalence and severity of striae gravidarum varies among populations. The current literature shows that in the general population in the US, there is a 50% -90% striae prevalence associated with pregnancy, partly as a result of normal hormonal changes in pregnancy and partly due to stretching of skin fibers. Many women experience striae gravidarum during their first pregnancy. Almost 45% percent of women experience striae gravidarum before 24 weeks' gestation. Many women who have lesions during the first pregnancy do not develop them during subsequent pregnancies. Genetic factors such as family history and race also appear to be predictive in striae appearance.
Prevention
Systematic reviews have not found evidence that creams and oils are useful for preventing or reducing signs of stretching in pregnancy. Safety in pregnancy from one ingredient, Centella asiatica, has been questioned. Evidence of treatment to reduce the appearance of scar after pregnancy is limited.
Treatment
No treatment is obviously useful for stretch marks although various things have been tried.
Various attempts have been tried including laser treatment, glycolic acid, and microdermabrasion. Topical tretinoin is categorized by the FDA as a known teratogen (causing malformations in the fetus) in animals, without adequate human studies on the safety of pregnancy.
Carboxytherapy has been used; However, there is a lack of evidence to support its use.
History
Since ancient times, pregnant women look for solutions to prevent stretch marks during pregnancy. Both the ancient Greeks and Romans used olive oil, while the Ethiopians and Somalis used incense.
Name
The medical terms for these signs include striae atrophicae, verealures, stria distensae, striae cutis distensae, lineae atrophicae, linea albicante, or simply striae.
References
External links
Source of the article : Wikipedia
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