Striae, also known as striae, are a kind of scarring on the skin by having an off-color hue. Over time they could diminish, but will not fade away completely. Stretch marks formed in pregnancy, usually during the last trimester, and usually on the belly, but also frequently occurring on the breasts, legs, hips, lower back and buttocks, are known as striae gravidarum.1

Stretch marks are caused by shredding of the dermis. This is often through the rapid stretching of the pores and skin associated with rapid growth or rapid weight changes. Stretch marks may also be influenced by de adn changes associated with puberty, pregnancy, bodybuilding, or hormone substitute therapy.2

There is no data that creams used when pregnant prevent stretch marks.3 Once they have formed you cannot find any clearly useful treatment however various methods have been attempted.4
Striae, or even „stretch marks”, begin since reddish or purple lesions on your skin, which can appear anywhere on the body, but are most likely to appear with places where larger amounts of body fat are stored; the most common sites are the abdomen (especially near to the navel), breasts, upper biceps and triceps, underarms, back, thighs (both inner and outer), knees, and buttocks. Over time, they have a tendency to atrophy and reduce pigmentation. The affected parts appear empty, and are tender to the touch.5

Stretch marks stem from the dermis, the resistant middle tissue layer that helps the skin retain its form. No stretch marks will application form as long as there is support from the dermis; stretching plays a role in the location where the marks occur and in what direction they run, nonetheless there are a number of contributing components (see: „Causes”, below) to their formation. They can (but never always) cause a burning along with itching sensation, as well as emotive distress. They pose absolutely no health risk in and of themselves, and do not compromise your body’s ability to function normally and also repair itself,6 however , they are often considered some sort of cosmetic nuisance.7 Young women are generally affected by far the most and often seek treatment to them from a dermatologist8 and following pregnancy.9
Stretch marks in a female chest
Striae distensae on an over weight white male
Striae gravidarum in a white female 2 weeks before delivery
Causesedit
They appear to be caused by stretches of the skin. This is especially true if you have an increase in cortisone.10

Put simply, an increase in cortisone levels can certainly increase the probability or severeness of stretch marks by minimizing the skin’s pliability; specifically, it affects the dermis by preventing the fibroblasts from forming collagen in addition to elastin fibers, necessary to hold rapidly growing skin taut. This can create a lack of support material as the skin is actually stretched, and lead to dermal and epidermal tearing, which can produce scarring in the form of stretchmarks. This is particularly the case if you have new tissue growth (which can interfere with the underlying bodily support of the dermis or epidermis, by displacing the particular supportive tissue).

Examples of cases where stretch marks are common, likewise given by the Mayo Clinic, include weight gain (in the form of fat and/or muscle), pregnancy, and adolescent growth spurts, though it is also noted that some medications, as well as other medical conditions and diseases, may raise the likelihood of stretch marks appearing. In the case of medication , the Clinic take into account „Corticosteroid creams, lotions and also pills and chronic make use of oral or systemic steroids” as a common contributing component; in the case of medical conditions that can give rise to stretch marks, examples given contain Ehlers-Danlos syndrome, Cushing’s affliction, Marfan syndrome, and „adrenal gland diseases”.

Pregnancyedit
Pregnancy stretch marks, also known as striae gravidarum, is a specific sort of scarring of the skin in the abdominal area due to quick weight gain during pregnancy. About 九成 of women are affected.11

A number of additional factors often promote the appearance of stretchmarks: new research of 324 women, done just after they had given labor and birth, demonstrated that low maternal time, high body mass list, weight gain over 15 kilos (33 pounds) and increased neonatal birth weight were being independently correlated with the event of striae. Teenagers have been found to be at the maximum risk of developing severe striae.12

These off-color blemishes are symptoms of pregnancy a result of the tearing of the piel, resulting in atrophy and loss in rete ridges.13 These scars often appear as reddish or bluish streaks on the abdomen, and will also appear on the boobies and thighs. Some of these striae disappear with time, while others continue being as permanent discolorations from the body.7

Mechanical distension and rapidly developing parts of the body during pregnancy (such as the abdomen, breasts, and thighs) are most commonly associated with striae formation. Some have suggested that relaxin and estrogen combined with bigger levels of cortisol during pregnancy can cause an accumulation of muocopolysaccharides, which improves water absorption of conjoining tissue, making it prime for cleavage under mechanical stress.812 There also seems to be an association between higher body mass charge and in women with much larger babies and the incidence and also severity of striae. Likewise, younger women seem to be from higher risk of developing striae during pregnancy.814

The actual prevalence and severity of striae gravidarum varies amongst populations. The current literature claim that in the general population on the US, there is a 50%-90% occurrance of striae associated with being pregnant,14 partly as a result of the normal hormonal changes involving pregnancy and partly as a result of stretching of skin fibers.315 A lot of women experience striae gravidarum throughout their first pregnancy. Nearly 45% percent of women develop striae gravidarum before 24 2 or 3 weeks of gestation.7 Many women who develop skin lesions during the first pregnancy never develop them during later on pregnancies. Genetic factors like family history and race additionally seem to be predictive in the overall look of striae.16

Protectionedit
A systematic review has not yet found evidence that ointments and oils are useful intended for preventing or reducing scars in pregnancy.3 The safety in pregnancy of a single ingredient, Centella asiatica, is questioned.15 Proof on treatments for minimizing the appearance of the scars right after pregnancy is limited.15