Assess Efficacy of of Oral Treprostinil in Patients With Symptomatic Primary or Secondary Raynaud's Phenomenon

Change in the Raynaud's Condition Score from baseline (2-week run in), comparing treprostinil treatment phase vs. placebo phase

Placebo is a sugar pill manufactured to resemble UT-15C. Change in the Raynaud's Condition Score from baseline (2-week run in), comparing treprostinil treatment phase vs. placebo phase