IgE stands for immunoglobulin E, a type of antibody that acts on cells in the mucus membranes, lungs and often the skin to produce allergic reactions of varying severity. Symptoms of high IgE can be anything from dry and itchy skin to life-threatening anaphylaxis. A high level of IgE typically means that a person has an untreated allergy, so the best way to lower a high IgE is to think about the underlying allergy.
Discuss your symptoms with a doctor if you suspect you have an undiagnosed allergy. Sometimes allergy symptoms can be highly similar to symptoms associated with other conditions, so it is important to verify that your symptoms do indeed indicate an allergy and what the allergic trigger might be.
Take the allergy medication recommended by your doctor. This might be a prescription medication or an over-the-counter medication, depending on the type and severity of allergy you have. Follow your doctor's instructions on how and when to use the medication, and if any questions arise, check with your doctor or pharmacist.
Avoid the triggering substance for your allergy as much as possible, especially if your symptoms aren't well controlled. If you have a dust allergy, this might mean using a dust filter in the room where you sleep. If you have an allergy to pollen, stay indoors on days that have a high pollen count. Your local weather station most likely has a pollen forecast for your area, as many people struggle with pollen allergies.
Discuss with your doctor the possibility of allergy shots, which might reduce your sensitivity to the allergy-inducing substance and thus reduce your IgE levels. Allergy shots may be the way to go in some situations, such as if you are allergic to dogs or cats but don't want to permanently live without pets, or if your allergy is severe and unresponsive to medication.