A lymph node. Sometimes (thou rarely) a lump behind the lower part of the ear can be a cyst or a tumor of the parotid gland. Again this is rare and shows up mostly in men above the age of 50, but I had one and I was 28. I would get it checked out by an Ear nose and throat doctor for peace of mind. It could be a bone spur.
If you have a hard lump on the back of your neck, it could be a cyst. It could also be a form of a boil. If it does not go away, you should have it checked out by a physician.
It could be an imbedded tick.
Could be a lymph node.
Tumor, Infection or bruise.
The lump on the back of your neck would be a part of your spine.
A pea-sized lump on the back on the neck that moves could be a node. However, it is important to get nodes checked out to ensure that they are benign.
A lump at the front of the neck could be inflamed lymph nodes, or an increase in one nodule of the thyroid gland which is a butterfly shaped organ in the neck belonging to the endocrine system. At the back of the neck a lump could be a muscle spasm or a problem with a spinal vertebra.
Im 13 and i have the exact same thing a lump on the left side of my neck it's really small .
every guinea pig has a lump on the back of their neck, im not sure what it's for tho... but it's nothing to worry about
For a small painful lump on your neck, start with your primary care provider. The history, physical, and any testing you get there will help narrow the possibilities so you can choose the right specialist, if needed.