question: Hi, may I answer your health queries right now ?  Please type your query here... hi, i'm a 15 year old male. about a year ago i noticed a small pea shaped lump sort of thing under my skin the back of my neck under the hair line. it is no more than a centimeter long. it causes no pain/redness/itching. it is just there. it should also be noted i live a pretty stressful life so i am wondering if this might have anything to do with it.