The term "vortex pilorum" refers to the natural whirlpool formation of the hair that occurs most commonly at the back of the human head. The word "vortex" is pronounced /ˈvɔːtɛks/ and represents a strong current of air or liquid moving in a circular motion. Meanwhile, "pilorum" is pronounced /pɪˈlɔːrəm/ and refers to the plural form of "pilus," which means "hair" in Latin. Combined, "vortex pilorum" describes the characteristic circular motion of hair in the back of the head.
Vortex pilorum, also known as the "crown whirl," is a relatively rare phenomenon observed in human hair. It describes the natural swirling pattern that occurs at the crown of the head, where the hair grows in a circular or spiral formation. This unique pattern is characterized by a central point from which the hair emerges and diverges in different directions, forming a vortex-like shape.
The term "vortex pilorum" is derived from the Latin words "vortex" meaning "whirlpool" or "vortex," and "pilorum" meaning "hair." It is a descriptive term coined to represent this specific hair pattern.
The vortex pilorum pattern typically has a symmetrical appearance, with hair fibers radiating outward from a central point. This distinct arrangement makes it distinguishable from other hair patterns commonly found on the scalp. The size and shape of the vortex can vary among individuals, and while it is often associated with individuals of African or Afro-Caribbean descent, it can be found in people of all ethnic backgrounds.
Despite being a naturally occurring feature, the significance of vortex pilorum remains largely cosmetic, with no direct implications for an individual's health. It is an aesthetic characteristic that can contribute to the uniqueness and diversity of human hair patterns.
Hair whorl, crown, a spiral arrangement of the hairs, as at the crown of the head.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.