 [ Symptoms ] i have a small lump just underneath the surface of my skin its like a hard marble it is not painful what is it  it is a lump underneath the skin its is not painful but it is red what could it be should i be concerned it is located about 3 inches below my belly button it kind of feels like hard scar tissue but i dont have any scars there i just do not know if its something simple like an ingrown hair anything would help till i can get to a doctor next week [ Disease ] it is hard to say what this lump is so it is good you are going to the doctor in the meantime i think i can set your mind at ease that this lump is not a medical emergency and probably is not anything life threatening many conditions can cause the type of lump you describe my best guess is you will discover this bump is a dermatofibroma which does indeed contain scar tissue these bumps often present as a hard lump under the skin that is discolored and sometimes tender to touch at any rate your health care provider will be able to diagnose this for you and recommend appropriate treatment wishing you all the best