Vibration Syndrome is described as which of the following?

• A. Finger blanching due to exposure to cold.
• B. Repeated, short episodes of finger blanching due to digital artery closure.
• C. Persistent finger swelling.
• D. Abnormal constriction of the blood vessels of the fingers characterized by recurrent episodes of finger blanching due to complete closure of the digital arteries.

Answer: (D)

Vibration syndrome centers on how exposure to hand‑held vibrating tools affects the finger blood vessels. The key feature is abnormal constriction of the digital arteries that causes episodes of finger blanching, often described as a white finger, typically triggered or worsened by vibration and cold. This vasospastic process leads to recurrent blanching episodes, which is the hallmark described in the best answer. Over time, those vasospastic episodes reflect vascular changes from vibration exposure and may be accompanied by numbness or reduced grip, setting it apart from simple cold-induced blanching or persistent swelling. The other descriptions either attribute blanching to cold alone, describe persistent edema, or imply a different mechanism that isn’t the vasospastic pattern seen with vibration exposure.