Heel nodules

I have a condition called Adiposa Dolorosa and have had terrible pain in my feet for a couple of years.
Tonight my husband observed no less than 15 pea-sized nodules on the back of each heel (and around the edges of both heels).
Could these be more lipomas or is there another condition similar to this.
The pain in my feet increases with pressure applied to the nodules.
They can be seen from 10-15 feet away when I am standing and nearly disappear when I sit.
Thank you!