Venous Insufficiency is a Clear Provoker of Pigmented Purpuric Dermatosis
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Background: Pigmented purpuric dermatosis (PPD) is a chronic disorder characterized by distinct petechial hemorrhage and brownish pigmentation. The cause of PPD is unclear, but several underlying conditions are associated with it. Previous reports suggest that venous in- sufficiency (VI) might be related to PPD; however, a clear correlation remains unelucidated. Objective: To elucidate the causal relationship between PPD and VI. Methods: A total 118 patients diagnosed with PPD in the Department of Dermatology, Pusan National University Hospital from November 2006 to July 2019 were retrospectively reviewed. Doppler ultrasonography of the lower extremities was performed in 56 PPD patients, who were then divided into two groups: PPD with and without VI. We compared the clinical features between the two groups. In the PPD with VI group, we assessed the correspondence ratios between PPD and VI lateralities, and between the PPD distribution and the veins involved. Results: VI was detected in 35 of the 56 patients (62.5%). The PPD with VI group was sig- nificantly associated with wider distribution, darker coloration and longer disease dura- tion. There was a positive correlation of laterality between PPD and VI, and between PPD distribution and the vein involved. Conclusion: This findings suggest that VI is a clear provoker of PPD.
Abstract
Background: Pigmented purpuric dermatosis (PPD) is a chronic disorder characterized by distinct petechial hemorrhage and brownish pigmentation. The cause of PPD is unclear, but several underlying conditions are associated with it. Previous reports suggest that venous in- sufficiency (VI) might be related to PPD; however, a clear correlation remains unelucidated. Objective: To elucidate the causal relationship between PPD and VI. Methods: A total 118 patients diagnosed with PPD in the Department of Dermatology, Pusan National University Hospital from November 2006 to July 2019 were retrospectively reviewed. Doppler ultrasonography of the lower extremities was performed in 56 PPD patients, who were then divided into two groups: PPD with and without VI. We compared the clinical features between the two groups. In the PPD with VI group, we assessed the correspondence ratios between PPD and VI lateralities, and between the PPD distribution and the veins involved. Results: VI was detected in 35 of the 56 patients (62.5%). The PPD with VI group was sig- nificantly associated with wider distribution, darker coloration and longer disease dura- tion. There was a positive correlation of laterality between PPD and VI, and between PPD distribution and the vein involved. Conclusion: This findings suggest that VI is a clear provoker of PPD.
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