In a nutshell
A small inward projection can occur along the outer rim of the ear. This Darwin’s tubercle may be present on one or both ears. It ranges from a barely visible bulge to a distinct nodule.
Why does it happen?
It is a developmental variation of the cartilaginous helix rim. Despite its historical name, it does not indicate special ancestry or individual hearing ability.
Frequency
The auricular nodule has differing prevalence depending on the population studied and the definition used. A universal figure would be misleading.
Frequency is a qualitative description, not your individual probability.
Is it normal?
Stable, skin-colored, and painless is normal.
When to seek advice
Have a newly growing, bleeding, or painful skin/cartilage change assessed by a dermatologist.
Does this happen to you?
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Sources (1)
- Darwin's Tubercle: Review of a Unique Congenital Anomaly (opens a new tab)
Anatomical location and definition.
Editorial update: . AI-assisted research and editing; not individually reviewed by a physician. How we research
