Patients who either do not have or have never had the angle between the jawline and the neck (cervico-mental angle).

Colloquially, this may be known as a turkey neck. There may be volume from fat under the chin.

If there is minimal fat, the ageing process may mean that there is loose skin with bands running across the front of the neck, typically from the chin to the collarbones.

Some patients may have a genetic predisposition to this (young people with necks) or most commonly, age-related loosening of the skin.