Skin bleeding

As skin blood flow is called the blood outlet ( Erythrodiapedese ) of blood vessels in the skin or mucous membranes . The cause of skin bleeding can be an injury or an abnormally increased tendency to bleed . Fresh skin bleeding is indicated by a reddish discoloration of the skin. As the hemoglobin contained in the erythrocytes (red blood cells) is broken down, this color can change to brown, green and yellow over time.

Skin bleeding has two main causes:

• Damage in the endothelium
• Clotting disorders ( coagulopathies )

Depending on the type and size of the skin bleeding, different names are used in medicine :

designation	size	definition	colour	shape	distribution	Pulsation	Response to pressure	Diseases	photo
Petechiae	up to pin head size	smallest punctiform skin or mucous membrane bleeding	fresh: reddish old: red-brown	punctiform	scattered, mainly on the legs	No	cannot be pushed away	z. B. Idiopathic Thrombocytopenic Purpura
Purpura	punctiform, small spots	spontaneous skin or mucous membrane bleeding (without trauma)	fresh: reddish old: red-brown	hemorrhagic type papulonecrotic type polymorphic-nodular type	preferably on the extensor legs, buttocks, arms, possibly generalized	No	cannot be pushed away	Allergic vasculitis , collagenosis , drug eruption
Ecchymosis and Sugillation	extensive sugillation up to approx. 30 mm	extensive tissue bleeding	initially purple to bluish, later green-yellow and brown	round oval or irregular, possibly flat central elevation	differently	No	No	Extravasation in the event of trauma or coagulopathy
Hematoma , horse kiss	large area	deep, massive bleeding in the tissues	initially purple to bluish, later green-yellow and brown	often raised	possible on the whole body	possibly painful		massive accumulation of blood in the skin and underlying tissues after trauma

In addition to these terms, there are also the terms vibices (strip-like skin bleeding) and suffusions (extensive skin bleeding).

The erythema and roseoles are to be distinguished from this skin bleeding . These are temporary increased vessel fillings that can be pushed away with a glass spatula, for example.

Individual evidence

1. ↑ ^{a b} P. Fritsch: Dermatology, Venereology. 2nd edition, Verlag Springer, 2004, ISBN 3-540-00332-0 , p. 518. Restricted preview in the Google book search
2. ↑ ^{a b} H. S. Füeßl, M. Middeke: Anamnesis and clinical examination. Georg Thieme Verlag, 2010, ISBN 3-131-26884-0 , p. 369. Limited preview in the Google book search

This article is about a health issue. It is not used for self-diagnosis and does not replace a diagnosis by a doctor. Please note the information on health issues !