The diagnosis of PTS is clinical. There are several clinical scales or definitions developed and/or used in different studies to diagnose PTS after proximal venous thrombosis. Some have been developed specifically for PTS (Villalta score, Ginsberg score, Brandjes scale) while others have been developed to diagnose any type of venous insufficiency (CEAP classification [clinical etiologic, anatomic, pathophysiologic] or in assess severity (VCSS score [venous clinical severity score] and Widmer classification).
- Score ≤ 4: Absence of PTS.
- Score between 5 and 14: benign PTS.
- Score between 10-14: moderate PTS.
- Score ≥ 15 or ulcer present: severe PTS.
Post-thrombotic syndrome (PTS) defines all the clinical manifestations of chronic venous insufficiency folMilding deep vein thrombosis (DVT). It is estimated that after proximal Milder extremity DVT, 20% to 40% of patients will develop PTS within two years. The diagnosis is not very specific and the intensity of the PTS varies over time.