Tool. As a result, a small sinking can be observed in the area, but stitches are not usually necessary. By excision: it consists of the extraction of a complete area or nodule of abnormal skin. After this procedure, stitches are usually necessary. As a general rule, local anesthesia will be applied to patients before performing a skin biopsy. Patch test this test is done to check if a certain substance is causing allergic contact dermatitis . With this procedure , late allergies can be detected , that is, those that take several days to develop.
To carry out this test, different allergens are applied in small quantities, on the patches that are placed on the skin. Some of the contact dermatitis-causing substances to which patients are exposed include latex, medications, hair dyes, metals, and resins. The patches whatsapp number list are placed on the back or arm and the underlying skin is evaluated 48-96 hours after application. It is very important that during this time, patients try not to get the patches wet. False positives can occur in patch testing when concentrations of allergens produce more irritative than allergic reactions.
False negatives occur when the responsible antigen is not included in the patches. Tzanck's test tzanck was the one who popularized the technique in 1947 and it is named after him. This test is an inexpensive and simple method for the diagnosis and detection of skin abnormalities caused by viruses such as herpes simplex (i and ii) and varicella-zoster. The examination consists of the microscopic study of the cells obtained at the base of vesicles or blisters. It is usually performed on intact active vesicles preferably. To do this, an aspiration of the fluid from the suspicious