Actually it is an abnormality but a lot of us view it as something cute or highlights the smile of a person. Society dictates us to look at it that way but in the medical field it is something different.
A dimple is any sort of indentation; most people use the term to refer specifically to indentations in the skin of people, particularly on the cheeks. Dimpled cheeks are considered attractive in many cultures, and it should be fairly easy to find someone with dimples in your neighborhood, since dimples are a genetic trait. Most dimples are actually caused by a birth defect, which just goes to show you that not all “malformations†are actually bad.
The most common cause of dimples is a shortened muscle, which explains why dimples are not always apparent at rest, since muscles are typically in their shortened state at rest. In the face, shorter face muscles pull at the skin, especially when someone smiles, creating a classic dimple. Over time, the muscles of the face can slowly stretch out, which is why some people have dimples when they are young, but lose them as they age. Dimples can also form on other body parts, like the buttocks. Dimples in other regions are not as highly prized as those on the face, perhaps because your face is readily visible, while other body parts are not.
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