I have a small lipoma (about size of a 50 pence piece) on the outer side of my forearm. Had it for about 2 or 3 years, hasn’t really grown since I became aware of it, very squishy and easily moved around. It’s suddenly become hard, unmovable and possibly slightly bigger. I will of course make a gp appointment. I was just wondering if anyone else has had such a thing happen or has any knowledge as to why it would suddenly harden? I don’t really know much about lipomas 🤷🏻♀️