Ulcer

Deep wound.

Round or irregular deeper defect extending through dermis to subcutis, fascia or bone.

Color: red, often pale yellow, yellow or gray-yellow.

Peripheral erythema, sometimes necrosis.

Depends on etiology, skin and mucosal membranes.

May develop crusts or necrosis.

Always heals with scar.

Nosologic entity, like venous ulcer.

Aphthae on mucous membranes (mm or cm).

Ulcus cruris, peripheral occlusive disease, burn, decubital ulcer, ulcerating tumours.

Vascular obstruction: reduced perfusion, infection, tumor.

Tissue destruction through trauma, burns or frost bites.

2.6 Ulcer