Which of the following is a typical presentation of PTS?

The typical presentation of Post-Thrombotic Syndrome (PTS) is often observed as symptoms emerging 1-2 years after a deep vein thrombosis (DVT) event. This delayed onset is significant because PTS is a long-term complication that can develop due to damage in the venous valves and the chronic effects of DVT, which can lead to venous hypertension.

In contrast, symptoms appearing immediately after a DVT may be related to the acute event itself rather than the long-term consequences that characterize PTS. Symptoms appearing after three months could suggest complications or sequelae but are generally not indicative of the classic timeframe for PTS, which can take longer to manifest. Symptoms that never appear would suggest that an individual does not develop PTS, which, while possible, does not align with the typical progressions seen in many patients following DVT. Thus, the correct answer reflects a clinically recognized timeframe for the onset of PTS symptoms.