An allergen is a substance that can cause an allergic reaction. Allergens are substances that, in some people, the immune system recognizes as "foreign" or "dangerous" but cause no response for most people.
Common allergens include:
See also:
Each year I see hundreds of new patients with complaints of hives and swelling. Hives are intensely itchy skin rashes that resemble welts... Read more »
Source: Harvard Decision Guide
Prevention You can prevent hives by identifying and avoiding the particular circumstance or substance that triggered your skin reaction. If your... Read more »
Source: ADAM Encyclopedia
UrticariaSymptomsItchingSwelling of the surface of the skin into red- or skin-colored welts (called wheals) with clearly defined edgesThe hives may... Read more »
Source: ADAM Encyclopedia
UrticariaPreventionAvoid exposure to substances that give you allergic reactions. Don't wear tight-fitting clothing and avoid hot baths or showers... Read more »
Source: ADAM Encyclopedia
UrticariaTreatmentTreatment may not be needed if the hives are mild. They may disappear on their own. To reduce itching and swelling:Avoid hot baths... Read more »
Source: ADAM Encyclopedia
Hives are raised, often itchy, red welts on the surface of the skin. They are usually an allergic reaction to food or medicine.Alternative... Read more »
Image of a skin rash caused by an allergic reaction... Read more »