Stretch marks are skin atrophy in the form of sinuous lines of white or purple that localized in tissue is seen by transparency through the epidermis.

They are located mainly in the wall of the stomach, hips, buttocks, legs, thighs, arms, back and breasts. In reality, a pathological state of tissue of the dermis, characterized by excessive fibrosis in the form of localized strings in response to the breakdown and poor quality of pre-existing fibers. We can say that they are scars from this tissue.

to form the stripe, color is purple, the dermis still has blood supply. Following is pink, also has irrigation. When there is no blood supply are pearly color. May disappear with skin treatments.