In a nutshell
When smiling, a small indentation can form in one or both cheeks. Its visibility changes with facial expression and the shape of the soft tissues. Long-standing cheek dimples normally cause no symptoms.
Why does it happen?
An anatomical study describes a double or bifid zygomaticus major muscle whose connection to the skin may explain a dimple. This is a plausible mechanism for some dimples, but does not prove that every dimple forms exactly this way.
Frequency
Cheek dimples occur in some people. Their frequency depends on population and definition; no single universally applicable rate is given.
Frequency is a qualitative description, not your individual probability.
Is it normal?
Dimples present since childhood are normal.
When to seek advice
A new indentation with a lump, inflammation, or paralysis should be medically assessed.
Does this happen to you?
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Sources (1)
- Pessa et al.: Double or bifid zygomaticus major muscle (opens a new tab)
An anatomical study of a bifid zygomatic muscle as a possible explanation for dimples.
Editorial update: . AI-assisted research and editing; not individually reviewed by a physician. How we research
