Hypertrophic scars are caused by excess collagen. There are several ways to prevent or cure them.
Scarring is a natural phenomenon, but the traces it leaves can create complexes. Researchers at Shimane University School of Medicine in Japan are working on methods to reduce the appearance of hypertrophic scars after injury. They publish their results in the journal Burns & Trauma.
Sometimes abnormal healing
After an injury or a burn, the healing process begins naturally so that the lesion closes. First, the cells of the epidermis will cleanse the area then rebuild the tissues thanks to collagen and blood vessels. In some cases, this process is disturbed and scars hypertrophic may form. They are the consequence of an overproduction of collagen, which results in an abnormal volume of the scar. According to the researchers, it is difficult to estimate the frequency of this type of scarring: it can affect up to 94% of post-operative cases. Certain factors can increase the risks including age, genetic predispositions or the size of the injury and its depth.
Several healing techniques
Pressotherapy is one of the main ways to prevent the appearance of hypertrophic scars. It is based on wearing compression garments day and night. It must be put in place within two months of the injury or surgery and usually lasts several months.
Researchers have studied the effectiveness of several other techniques, including laser. According to them, there is sufficient evidence of its effectiveness when used early: it would accelerate the shrinkage of the scar. Another technique is to remove excess skin, applying creams in parallel. According to the research team, the effectiveness varies depending on the type of scar. As for botox, Japanese scientists point out that while it seems to have positive effects on the prevention of scars, there are still uncertainties about the dosage necessary for such use.
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