<s>[INST] I woke up a few days ago, and i found a small lump on the right side of my neck , right above my colorbone, its about the size of a dime, when it first came up it was a little smaller, and caused stiffness to my neck for 2 or 3 days, the stiffness is gone today, but the bumb is still there, you cant see it unless i tilt my head to the left and point it out but you can feel it. Im a 12 and a half year old female , 5 foot 4, and 156 pounds i dont smoke , or drink and i still havent had my pieriod [/INST] Halloumi on the collar bone may be due to enlarged lymph nodes. There are many lymph nodes in this region for lymphatic Chat Doctor. Generally lymph node are enlarged due to infection/inflammation in scalp, face,ear or throat.This region proper clinical examination to search for cause. Mostly these are due to benign reasons and disappear with treatment of underlying cause. So, you should consult your physician for proper evaluation. Get well soon. Take Care </s>