DVT is a blood clot that forms in a major vein of your body, most commonly in your legs. It can also occur in your arms. * Swelling in the affected leg or arm, which can include swelling in the foot or ankle. It is most typically in one leg or arm.
Allergen immunotherapy is appropriate for patients suffering from immunoglobulin E (IgE)âmediated allergic diseases such as seasonal allergic rhinitis, perennial rhinitis, allergic asthma, and insect venomanaphylaxis.
In any type of allergy, when the immune system reacts against an otherwise harmless substance, the substance is called an allergen. When the immune system detects the allergen, a type of antibody named immunoglobulin E (IgE) is produced, triggering the release of chemicals within the body. One chemical is histamine.