Stasis purpura
Introduction
Introduction to stasis purpura Stasis purpura, also known as acroangiodermatitis, is a purulent lesion of the lower extremities due to venous stasis. Often accompanied by venous reflux block factors, such as varicose veins and heart failure, resulting in increased venous pressure, red blood cell extravasation. basic knowledge The proportion of sickness: 0.004% - 0.005% Susceptible people: more common in men Mode of infection: non-infectious Complications: Eczema
Cause
Cause of stasis purpura
(1) Causes of the disease
The cause is not fully understood.
(two) pathogenesis
The pathogenesis is still unclear. The histopathology is mainly changed to the small vascular surface of the dermis, especially the venules and capillary wall thickening, and the vascular section is increased. Red blood cell extravasation and hemosiderin cells can be seen, but the epidermis has no obvious changes.
Prevention
Stasis purpura prevention
The prevention and treatment of this disease should be directed to the causes of venous stasis, such as raising the lower limbs, using elastic bandages and wearing high-stretched elastic stockings to help alleviate the condition.
Complication
Stasis purpura complications Complications eczema
eczema.
Symptom
Symptoms of stasis purpura Common symptoms Light brown spots hardening eczema edema
More common in men. Often occurring in long-term standing or walking people. The lesion is a small purpura spot, which can be fused into irregular patches of 1 to several centimeters, distributed in clusters, and also has follicular lesions, yellow or brown, due to hemosiderin cell disruption Caused by calming, normal mild eczema changes in the epidermis, with or without edema, ulcers, sclerosis and other signs of venous insufficiency (stagnation), the disease occurs in the lower limbs, especially the lower leg, can spread to the back of the foot, toes Therefore, it often occurs in the veins of dilatation or superficial venous tumors.
Examine
Examination of stasis purpura
There were no abnormal findings in laboratory tests.
In addition to the beam arm test is often positive, generally no abnormalities.
Diagnosis
Diagnosis and identification of stasis purpura
Clinically, it is not difficult to diagnose according to the purpura plaques which are mainly based on calves, different in size and shape, and often distributed along the superficial veins.
It needs to be differentiated from the following diseases: stasis dermatitis, progressive pigmentary purpuric dermatitis.
