Stretch marks

These grooves are in the form of skin atrophy whit lines , localized in the connective tissue . They appear when the skin is stretched or giving of themselves due to rapid growth . Although the skin is usually elastic, when it's overstretched, the normal production of collagen (the major protein that makes up the connective tissue of the skin) is disrupted. Consequently, they can form scars called stretch marks. They are preferentially located in the abdominal wall, buttocks, legs, arms, and breasts. The color of the streak is at first darker and in its final stage becomes pearly white ...