Allergies

Allergies are hypersensitive responses from the immune system to substances that either enter or come into contact with the body. 

Insect Bites and Stings and Spider Bites

Insect and spider bites often cause minor swelling, redness, pain, and itching. These mild reactions are common and may last from a few hours to a few days. Home treatment is often all that is needed to relieve the symptoms of a mild reaction to common stinging or biting insects and spiders. Some people have more severe…

Jellyfish Stings: Allergic Reaction

The reaction that you have to a jellyfish or Portuguese man-of-war sting depends on many things. The potency of the venom changes with the type of jellyfish and also is stronger during some seasons than in others. Other things that affect the severity of your reaction include: Your size, age, and general health. The…

Nonpoisonous Spider Bites

Symptoms of a nonpoisonous spider bite may last from a few hours to a few days and are usually mild. Symptoms usually occur at the site of the bite and may include: Swelling. Redness. Pain. Itching. Home treatment is often all that is needed to prevent infection and relieve symptoms of a bite from a nonpoisonous spider.

Omalizumab for Asthma

Omalizumab (Xolair) is a medicine approved by the U.S. Food and Drug Administration (FDA) for use in people age 12 and older who have moderate or severe persistent asthma. This medicine costs a lot more than any of the standard treatments for asthma. The medicine works by blocking immunoglobulin E (IgE) from attaching…

Over-the-Counter Medicines for Allergies

Many over-the-counter medicines are available to control symptoms of allergies, including allergic rhinitis. These medicines work well but can have side effects. Be safe with medicines. Read and follow all instructions on the label . It is usually best to take only single-ingredient allergy or cold preparations, instead…