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Ulnar Artery Thrombosis Presented with Unilateral Raynaud's Phenomenon Findings After Long-Term Intensive Handicraft Activity: Hypothenar Hammer Syndrome.

BACKGROUND: Hypothenar Hammer Syndrome (HHS) is an uncommon vascular syndrome of upper extremity. HHS should be considered in patients who are presented with digital ischemia. Distal ulnar artery compression at the level of Guyon's canal with trauma result in thrombus or aneurysm. It may be observed following repetitive chronic trauma or acute blunt trauma to hypothenar eminence. Middle-aged male laborers, smokers and dominant hands are affected frequently. Hand pain, discoloration or ulceration of digits, cold intolerance, hypothenar pulsatile mass, hypothenar weakness, numbness are significant clinical findings.

CASE CHARACTERISTICS: In this report, we presented 37-year-old female complaining with intermittent hand pain, paleness and cyanosis at third, fourth and fifth fingers of right hand. She had no blunt trauma to her hand but intense amount of needle lace with her hands. Doppler ultrasonography (USG) revealed ulnar arterial thrombus at right Guyon's canal level.

CONCLUSION: She was diagnosed as HHS secondary to intense needlework. A calcium channel blocker and low dose aspirin was prescribed to her and avoidance of hand traumas was suggested. These interventions relieved digital ischemia symptoms on her hand.

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