2.6 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.

Comment / Explanation

Nosologic entity, like venous ulcer.

Aphthae on mucous membranes (mm or cm).

Typical Dermatoses

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


Vascular obstruction: reduced perfusion, infection, tumor.

Tissue destruction through trauma, burns or frost bites.

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