Scars, also known as striae, are a way of scarring on the skin with the off-color hue. Over time they might diminish, but will not fade away completely. Stretch marks formed in pregnancy, usually during the last trimester, and generally on the belly, but also frequently occurring on the breasts, upper thighs, hips, lower back and buttocks, are known as striae gravidarum.1

Stretch marks are caused by ripping of the dermis. This is often through the rapid stretching of the pores and skin associated with rapid growth or maybe rapid weight changes. Stretch marks may also be influenced by de las hormonas changes associated with puberty, being pregnant, bodybuilding, or hormone replacing therapy.2

There is no evidence that creams used while prevent stretch marks.3 Once they have formed you cannot find any clearly useful treatment though various methods have been tried.4
Striae, or „stretch marks”, begin seeing that reddish or purple skin lesions, which can appear anywhere on the body, but are most likely to appear within places where larger amounts of body fat are stored; the most common sites are the abdomen (especially near to the navel), breasts, upper abs, underarms, back, thighs (both inner and outer), body, and buttocks. Over time, are likely to atrophy and reduce pigmentation. The affected parts appear empty, and are delicate to the touch.5

Stretch marks occur in the dermis, the resilient middle tissue layer that will help the skin retain its design. No stretch marks will form as long as there is support within 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 elements (see: „Causes”, below) to their formation. They can (but tend not to always) cause a burning and itching sensation, as well as over emotional distress. They pose not any health risk in regarding themselves, and do not compromise your bodys ability to function normally in addition to repair itself,6 however , they are often considered some sort of cosmetic nuisance.7 Young women are generally affected probably the most and often seek treatment your kids from a dermatologist8 and following pregnancy.9
Stretch marks in a female busts
Striae distensae on an overweight white male
Striae gravidarum in a white female fourteen days before delivery
Causesedit
They appear to be caused by extending of the skin. This is especially true if you find an increase in cortisone.10

Put simply, an increase in cortisone levels could increase the probability or severeness of stretch marks by lessening the skin’s pliability; specifically, it affects the piel by preventing the fibroblasts from forming collagen as well as elastin fibers, necessary to keep rapidly growing skin taut. This can create a lack of loyal material as the skin is actually stretched, and lead to skin and epidermal tearing, which can produce scarring in the form of scars. This is particularly the case any sort of accident new tissue growth (which can interfere with the underlying bodily support of the dermis as well as epidermis, by displacing often the supportive tissue).

Examples of instances where stretch marks are common, also given by the Mayo Medical clinic, include weight gain (in the form of fat and/or muscle), maternity, and adolescent growth spurts, though it is also noted this some medications, as well as other health conditions and diseases, may increase the likelihood of stretch marks appearing. In the case of medication , the Clinic points to „Corticosteroid creams, lotions and also pills and chronic make use of oral or systemic steroids” as a common contributing element; in the case of medical conditions that can play a role in stretch marks, examples given consist of Ehlers-Danlos syndrome, Cushing’s symptoms, Marfan syndrome, and „adrenal gland diseases”.

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

A number of additional factors apparently promote the appearance of stretchmarks: new research of 324 women, done just after they had given birth, demonstrated that low maternal age, high body mass list, weight gain over 15 kg (33 pounds) and larger neonatal birth weight had been independently correlated with the happening of striae. Teenagers had been found to be at the best risk of developing severe striae.12

These off-color blemishes are symptoms of pregnancy a result of the tearing of the inside the, resulting in atrophy and loss of rete ridges.13 These scars often turn up as reddish or bluish streaks on the abdomen, and can also appear on the chests and thighs. Some of these striae disappear with time, while others stay as permanent discolorations of the body.7

Mechanical distension and rapidly developing body parts during pregnancy (such as the abdominal, breasts, and thighs) are commonly associated with striae formation. Several have suggested that relaxin and estrogen combined with increased levels of cortisol during pregnancy could cause an accumulation of muocopolysaccharides, which raises water absorption of conjoining tissue, making it prime intended for cleavage under mechanical anxiety.812 Generally there also seems to be an association in between higher body mass directories and in women with much larger babies and the incidence and severity of striae. In addition, younger women seem to be from higher risk of developing striae during pregnancy.814

Typically the prevalence and severity involving striae gravidarum varies between populations. The current literature claim that in the general population on the US, there is a 50%-90% incidence of striae associated with being pregnant,14 partly due to the normal hormonal changes connected with pregnancy and partly due to stretching of skin fabric.315 A lot of women experience striae gravidarum in their first pregnancy. Nearly 45% percent of women develop striae gravidarum before 24 months of gestation.7 Many women who develop lesions on the skin during the first pregnancy usually do not develop them during afterwards pregnancies. Genetic factors for instance family history and race in addition seem to be predictive in the physical appearance of striae.16

Avoidanceedit
A systematic review have not found evidence that creams and oils are useful intended for preventing or reducing scars in pregnancy.3 The safety in pregnancy of one ingredient, Centella asiatica, has become questioned.15 Facts on treatments for lowering the appearance of the scars immediately after pregnancy is limited.15