Was ill this June & had rapid 8lb weight loss; couldn't eat normally-very little protein, etc- for 4 mos. Last month, I saw SUDDEN change to upper arm skin. My triceps, which I'd begun toning 2 mos ago, now had deep crepey creases extending from armpit to elbow nearing forearm, where I NEVER had loose skin! Could sudden dietary change/minor rapid weight loss cause this, & can the skin snap back on its own? If not, how long to wait & what action to address it?