A doctor will examine the area carefully, because the neck has important structures and any lump there should be checked properly.
If it is a cyst, it can be numbed, opened and drained, and the sac can be removed once the inflammation has settled.
Afterwards a small dressing is placed behind the ear, and the area usually heals well because of its good blood supply.
Any lump on the neck that grows, hurts or does not go away should always be looked at by a professional.
Listen to your body and give it the care it asks for. The videos below show cysts near the ear and neck being treated.