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2. Stasis ulcer - DermNet

   dermnetnz.org/topics/stasis-ulcer

   A stasis ulcer is the most common cause of chronic full-thickness skin loss on the lower leg. As the name implies venous blood doesn’t flow properly from the leg back towards the heart. A stasis ulcer is also called venous leg ulcer, gravitational ulcer and varicose ulcer (although the latter is an inappropriate name when varicose veins are ...

3. Leg ulcers - DermNet

   dermnetnz.org/topics/leg-ulcer

   Stasis ulcer. Characteristics of a stasis ulcer include: Located below the knee, most often on the inner part of the ankle; Relatively painless unless infected; Associated with aching, swollen lower legs that feel more comfortable when elevated; Surrounded by mottled red-brown staining and/or dry, itchy and reddened skin (venous eczema).

4. Venous insufficiency - DermNet

   dermnetnz.org/topics/venous-insufficiency

   What is venous insufficiency? Venous insufficiency occurs when the normal flow of blood from the superficial veins to the heart via the perforating deep veins in the lower limbs is impaired, resulting in chronic venous congestion. It can be classified as superficial vein insufficiency, perforating, or deep vein insufficiency.

5. Differential diagnosis of leg ulcer - DermNet

   dermnetnz.org/topics/differential-diagnosis-of-leg-ulcer

   Chronic venous insufficiency (70%) Stasis ulcer is found on the lower leg, most often above the medial or lateral malleolus. Often relatively painless, sometimes painful if infected. Brown haemosiderin staining of the lower leg is commonly present. May also have venous eczema, oedema, lipodermatosclerosis.

6. Venous eczema, gravitational eczema - DermNet

   dermnetnz.org/topics/venous-eczema

   What causes venous eczema? Venous eczema appears to be due to fluid collecting in the tissues and activation of the innate immune response. Normally during walking the leg muscles pump blood upwards and valves in the veins prevent pooling. A clot in the deep leg veins (deep venous thrombosis or DVT) or varicose veins may damage the valves.

7. Wound healing. Leg ulcers - DermNet

   dermnetnz.org/cme/wound-healing/leg-ulcers-cme

   Class I: 14-17mm Hg for superficial or early varices. Class II: 18-24mm Hg for larger varices, mild oedema and small ulcers. Class III: 25-35mm Hg for gross varices, postthrombotic leg, gross oedema, ulcers. Stockings are difficult to apply over active ulcers and dressings.