6. Sensitization. Allergy

6.1 Two main forms of awareness-raising

Type IV contact allergy manifests as contact eczema and dermatitis, mediated by T lymphocytes derived from the thymus. The effect is characterized by irritation (redness) and intracellular edema of varying intensity at the site of contact of the substance with the skin.

Type I humoral allergy manifests as rhinitis, sneezing, asthma or angioedema, and pulmonary edema in its severe form. The immune mediators are IgM and IgG immunoglobulins, secreted into circulating blood by B lymphocytes located...