hi welcome to HCM
i had gone through your query and understand your concerns.
i would come up with two most possibilities to fit your condition .these include
1.the first one may be,LIPOMA;they move freely on the underlying structures,but may not be adherent to the overlying epidermis
2.second possibility is,DERMATOFIBROMAS; Dermatofibromas contains scar tissue and feel like hard lumps in the skin.
i advise you taking Homeopathic
medicines gives safe and permanent cure for your complaints without any surgery
consult your local homeopathic physician for correct diagnosis of the case and remedy to fit your complaints
I hope this is helpful for you, thank you