While PUA are infrequently diagnosed, inciting events such as accidental or iatrogenic trauma continue to be documented, and management guidelines are lacking. Duplex ultrasonography is recommended as the first line imaging study, with subsequent Allen Test to assess for ulnar artery vs. mixed dominance for hand perfusion. A pseudoaneurysm of 3 cm is proposed as a general threshold for considering intervention, with caveats for smaller lesions causing pain or neurologic symptoms. This review serves as a reference for physicians who encounter PUA.