Purpura can be divided into thrombocytopenia or non thrombocytopenic purpura according to its pathogenesis. Purpura occurs after crying, vomiting and coughing. The main causes are venous blood stasis and gravity.
Purpura is a kind of skin and mucosa change caused by erythrocyte exudation outside blood vessel. According to its pathogenesis, it can be divided into thrombocytopenic or non-thrombocytopenic purpura.
The former is platelet disease, the latter includes vascular purpura, coagulation disorders and other clinical syndromes. Henoch-Schonlein purpura (HSP) occurs after crying, vomiting and coughing. It is also called tension purpura (TEP), or intravascular hypertensive purpura (IVHP), and belongs to vascular or non-thrombocytopenic purpura.
The cause of tension purpura is mainly caused by venous stasis and gravity. Most of the children cry and breath, vomiting, cough, due to excessive exertion, so that the pressure of the superior vena cava temporarily increased, blocked blood reflux, venous blood stasis, subcutaneous capillary permeability increased, or even ruptured, blood extravasation. This kind of purpura often occurs in the face, neck and other loose tissues, forming a pinpoint to millet grain size purple stasis, not higher than the skin, no inflammatory reaction, pressure does not fade.
Prevention of tension purpura, on the one hand to timely treatment of the primary disease, on the other hand to prevent children from crying, vomiting, cough and overexertion. Vitamin C, calcium gluconate and so on can be used in treatment. After a week of general treatment, the ecchymosis can disappear.
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