More than likely it is an extra piece of cartilage.
An insect bite is a possibility.
Also an answer: any number of things can cause that, could also be an allergic reaction to something. You didn't say whether it was painful or not. Best to seek medical care if it lingers and does not go away.
There are some studies that have been completed that theorize a crease behind your ear means you are at risk of heart disease. Other than that, having a crease behind your ear means nothing.
On the 2.4L it is behind the oil pan, on the crease of the engine.
Usually, that is a sebaceous cyst... Not normally associated with headaches. Google "sebaceous cyst"...
Front on bowling action is where the back leg is behind the popping crease and front leg is facing the batsman.
in a crease marking what are the crease edges with all the crease?
less than a minute A wrinkle or crease does not take that long. For example, when you wear dress and you sit down, a fold may appear. You are sitting on that fold and you body heat acts like an iron. It presses the dress in that manner and then you have a crease. When you iron, the heat takes away the crease because you are pressing on it with heat and it flattens out. Creases may be caused when in your closet, because the weight of other clothes preeses it and it becomes a crease or wrinkle.
A crease between your butt
Jimmy Crease was born in 1949.
Malleus Crease was created in 1996.
A synonym for crease is fold.
One rule is that once you start the bowl, you can't stop in the middle of it. Another one is that you have to bowl behind the crease or it will be a no ball.
Some times the crease is bigger and there are more seats in Olympic rinks