When the digital mucous cyst is punctured, a clear, viscous fluid eminates.
DIGITAL MUCOUS CYST
A Digital Mucous Cyst (DMC) is a collection of mucin in the dermis, usually occurring between the proximal nail fold and the DIP joint.
- A groove of the nail commonly forms due to downward pressure on the nail matrix.
The DMC usually occurs in the periungual area. It often disrupts the nail matrix, making a groove in the skin. When punctured, a clear, viscous fluid may emanate. Fingers are more commonly affected than toes. The DMC is not a true cyst (with an epithelial wall). Instead, it is a pseudocyst.
A groove commonly forms due to downward pressure on the nail matrix.
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