OK so this is something ive wondered about for years now, and am hoping someone else has experienced this.
Every time I have lost weight no matter the method, I notice under my skin little bumps.
Particularly in areas that have a lot of fat, belly overhang, arms near my armpits and inner thighs. Some are hard, some are squishy and if you push hard enough you can feel them kind of "pop" that does leave a bruise on me too if that happens.
I have googled a few times now but can never find anything.

Are these lumps fat? and these are what shrink when you lose weight?

Its really been bugging me that I don't know, but have only just started noticing them again as everything is loosening up again.

Surely I am not the only one who knows what I am talking about?