With large amounts of weight gain, especially if for long periods of time, the skin is stretched out to beyond its limits. This mechanical stretch fractures the collagen and elasin fibres, leading to visble marks on the skin (stretch marks).
This damage can leave hanging redundant skin which can is no longer elastic.
This can effect the face and neck, arms, breasts, bra fat rolls, the lower back, buttocks, abdomen and thighs. The pattern of excess skin can be very variable.
On the body, the principle of treatment involves removing excess skin surgically. This is known as body contouring surgery and includes: