This patient exhibits the classic hyperpigmentation and varicosities of stasis dermatitis.There is inflammatory eczematous change overlying the medial ankle, with healed scarring from recent ulceration.
This loss of valvular function can result from an age-related decrease in valve competency.
Alternatively, specific events, such as deep venous thrombosis, surgery (eg, vein stripping, total knee arthroplasty, harvesting of saphenous veins for coronary bypass), or traumatic injury, can severely damage the function of the lower-extremity venous system.
This is most likely due to the fact that pregnancy results in significant stress on the lower-extremity venous system, with many women experiencing earlier and more severe derangement of lower-extremity valvular function.
The risk of developing stasis dermatitis steadily increases with each passing decade; when considering only adults older than 70 years, the prevalence of stasis dermatitis may be greater than 20%.
Stasis dermatitis occurs as a direct consequence of venous insufficiency.