Originally Posted by
pvdl.
Facial bone loss means that your jaw, chin and cheekbones LOSE bone mass . The top layer of bone is lost and your jaw/cheekbone and chin are smaller and less thick. This results in the face looking smaller and less chiseled.
BONE loss is not what you describe above, i.e. moonface. Moonface is when you gain a lot of fat in your face which hides your bone structure resulting in a less chiseled look. As soon as you lose the facial fat your bone structure can be seen again. Your bone structure has thus not reduced in size but has been hidden under an increased fat layer. All you have described is that you gained fat in your face and then lost it again.
If you have facial bone loss it often goes hand in hand with collagen loss, i.e. with a decrease of facial fat. You lose facial fat/ collagen and bone.