Acne keloidalis nuchae most commonly presents itself in individuals aged 13 to 25.
Above the seventh cervical vertebrae, the supraspinous ligament is continuous with the ligamentum nuchae.
The ligamentum nuchae was found to be continuous with the posterior cervical spinal dura and the lateral portion of the occipital bone.
The ligamentum nuchae and trapezius muscle attach to it.
This is useful in blood vessels, the lungs, in skin, and the ligamentum nuchae, and these tissues contain high amounts of elastins.
Posteriorly (towards the back of the neck), it blends with ligamentum nuchae.
One of the most readily identifiable is the thickened, deeply fissured skin seen on the back of the chronically sun-exposed neck, known as "cutis rhomboidalis nuchae".
