Heterochromia of the hair refers to the condition where a person's hair grows in two or more distinctly different colors.
This condition essentially means that different sections of hair on the same individual exhibit different pigmentation, leading to variations in color. These color differences can be symmetric (e.g., lighter hair in the armpits or a red mustache on a person with brown hair) or asymmetric. When symmetric, it is often considered a normal physiological occurrence.
Here's a more detailed breakdown:
- Definition: The presence of two or more different hair colors on the same person.
- Symmetry: The distribution of the different colors can be symmetrical or asymmetrical.
- Physiological vs. Pathological: Symmetrical heterochromia is often considered normal. The underlying cause of asymmetrical heterochromia is not provided in the reference.
