Stretch marks, also known as striae , tears in the dermis. Stretch marks often incorrectly classified as scars, although they are not. "... They do not hurt because they do not consist of fibrotic tissue contrast, stretch marks represent, the average gap in the thin epidermis dermisleft by stretched or torn elastin fibers .."

Our skin has elastic properties, but growing too fast to"overstretch" elastic limit of the skin. A good way to illustrate thisis with socks. Most elastic in their socks, so they form a tightly around your ankle. This elastic is stretched when we put on andtake off socks.

After a time, and wear, elastic sock it becomes overwhelmed andno longer fit tightly at the ankle out. It looks pretty silly when you'rewearing shorts and socks you hang your ankle. This applies equally to stretch marks. When skin is overwhelmed, loss of elastic properties and the connective fibers break, creatingstretch marks.