[Raynaud's phenomenon in occupational vibration exposure]

Area of Science:

• Occupational Medicine
• Rheumatology
• Vascular Disorders

Background:

• A 34-year-old female stonemason presented with symptoms suggestive of vibration-induced white finger disease.
• Long-term exposure to high-frequency hand-arm vibrations was noted.
• Initial physical examination revealed normal findings.

Observation:

• The patient reported intermittent white finger attacks, particularly in cold weather.
• A cold water provocation test indicated delayed rewarming of the long fingers.
• Nailfold capillary microscopy results were within normal limits.

Findings:

• The patient was diagnosed with vibration-induced white finger disease, an occupational illness.
• Over three years, Raynaud's phenomenon symptoms worsened despite cessation of vibrating tool use.
• The deterioration was linked to newly developed rheumatoid arthritis, confirmed by repeated cold water provocation tests.

Implications:

• Differential diagnosis for Raynaud's phenomenon must include occupational exposures.
• Occupational history is crucial for accurate diagnosis of work-related conditions.
• Under German social law, the later deterioration was attributed to rheumatoid arthritis, deemed independent of occupational exposure.