Primary Raynaud's Phenomenon

Duration of symptoms

Are symptoms consistent with vasospastic attacks?

Is involvement of the extremities bilateral?

Are the peripheral pulses symmetrical?

Is nailfold capillary microscopy normal?

Is the erythrocyte sedimentation rate (ESR) elevated?

Is the antinuclear antibody (ANA) positive?

Is there a possible explanation (drug, disease, occupation) that can explain the findings?

Gangrene