What is a lump on the right side of the neck?

Answer

It could be anything but most commonly it is a lymph node. This would be right under where your jaw hinges. It may (or may not) feel hard, warm to the touch or painful. If it lasts for more than two weeks you ought to call your doctor. Generally, your lymph nodes (sometimes just one though) will swell when you are sick or fighting off an illness. A lot of your immune response is produced in them. You have lymph nodes on the sides of your neck, in your armpits and in your groin. Hope this helps!