A face full of erythema after vomiting is likely to be pressure purpura, which requires no special treatment and the lesions can gradually subside on their own.
Pressure purpura is the rupture of capillaries due to elevated pressure in blood vessels caused by various reasons. In the process of vomiting, it will lead to increased pressure on the capillaries in the face, increased permeability, and extravasation of red blood cells will appear as a symptom of erythema all over the face. Usually no special treatment is needed, and the purpura can gradually subside on its own.
At the same time, it is necessary to actively treat the primary diseases that cause vomiting. If erythema occurs in other parts of the body besides the face, it is also necessary to improve the blood routine, coagulation function and other related tests to exclude blood system diseases.
Erythema all over the face after vomiting may also be other diseases, it is recommended to consult a doctor in time, under the guidance of the doctor reasonable treatment.