Vesicles is performed or a scraping of the base of the ulcerative lesions is performed with a scalpel, if any. The samples obtained are fixed on a slide and stained with wright's or giemsa's stains. The presence of giant multinucleated cells is a sign of herpes simplex or herpes zoster infection. Diascopy its objective is to determine if an erythema is secondary to the presence of blood with superficial vessels typical of inflammatory or vascular lesions or is due to hemorrhage with extravasation of erythrocytes typical of abnormalities such as purpura.
This cutaneous anomaly owes its name to the fact that its main manifestation is the presence of purple spots of about 4 mm on the skin and mucous membranes. It consists of compressing the skin lesions by means of a sheet of glass or transparent plastic to whatsapp number list remove the blood accumulated in the capillaries by pressure and check if the erythema clears up. If it is a hemorrhagic lesion, the skin will not turn pale when pressed. On the contrary, when it comes to inflammatory and vascular lesions, the skin will lighten with pressure.what is biometrics?
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