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 some cases, your immune system will defend against substances that typically donât pose a threat to the human body. These substances are known as allergens, and when your body reacts to them, it causes an allergic reaction. You can inhale, eat, and touch allergens that cause a reaction. Doctors can also use allergens to diagnose allergies and can even inject them into your body as a form of treatment.