Immunology

Breaking news on oral food challenges

Oral food challenges (OFCs) are the gold standard for allergists when diagnosing a food allergy. The person being tested is given a very small dose of the food by mouth under the supervision of a board-certified allergist ...

Immunology

Breaking news on penicillin allergy

At some point you may have had a reaction to penicillin and were told you were allergic. And there's a good chance it has stayed in your chart throughout your childhood and into adulthood. But 9 of 10 Americans who think ...

Genetics

Rare mutations drive cystic fibrosis in Caribbean

Cystic Fibrosis (CF) in Puerto Rico and the Dominican Republic is dominated by unusual gene mutations not often observed in previously studied CF populations, according to comprehensive genome sequencing led by physician-scientists ...

page 1 from 23

Asthma (from the Greek άσθμα, ásthma, "panting") is the common chronic inflammatory disease of the airways characterized by variable and recurring symptoms, reversible airflow obstruction, and bronchospasm. Symptoms include wheezing, coughing, chest tightness, and shortness of breath. Asthma is clinically classified according to the frequency of symptoms, forced expiratory volume in 1 second (FEV1), and peak expiratory flow rate. Asthma may also be classified as atopic (extrinsic) or non-atopic (intrinsic).

It is thought to be caused by a combination of genetic and environmental factors. Treatment of acute symptoms is usually with an inhaled short-acting beta-2 agonist (such as salbutamol). Symptoms can be prevented by avoiding triggers, such as allergens and irritants, and by inhaling corticosteroids. Leukotriene antagonists are less effective than corticosteroids and thus less preferred.

Its diagnosis is usually made based on the pattern of symptoms and/or response to therapy over time. The prevalence of asthma has increased significantly since the 1970s. As of 2010, 300 million people were affected worldwide. In 2009 asthma caused 250,000 deaths globally. Despite this, with proper control of asthma with step down therapy, prognosis is generally good.

This text uses material from Wikipedia licensed under CC BY-SA