Get ready to energize your life?
Top Offers Only Today
Support your health and step-up your mental focus
post in: Lifestyle Date:08 Oct 2017, 11:42 views:2878
Asthma is a writing chronic inflammatory disease of the airways. Individuals with asthma may experience recurrent wheezing, dyspnea, chest tightness, and cough. These symptoms reflect episodes of reversible airflow obstruction, which may remit spontaneously or with treatment.
Over time, many asthmatics experience progressive airway remodeling, leading to an incompletely reversible, or fixed, airflow obstruction. Further, inflammation in the asthmatic airway induces airway bronchial hyper-responsiveness to a variety of allergic, infectious, or irritant stimuli. Public health impact of asthma, asthma is a very common chronic disorder.
Asthma severity can range from intermittent to severe; more severe asthma is associated with significant morbidity and mortality. Further, asthma prevalence is increasing with time 1, perhaps due to better recognition and phenotyping.
It is estimated that, in the United States in 2013, asthma affected.5 million adults and.1 million children, reflecting.3 and.0 of the population, respectively. Approximately half of those individuals experienced an asthma attack, which is defined as sudden worsening of asthma symptoms due to bronchoconstriction, and when severe, hyperinflation and air trapping.
Asthma is the leading cause of absenteeism in children in the United States, causing approximately 50 of children to miss at least one school day each year, and one in three adults to miss at least 1 day of work.
Three out of five asthmatics are forced to limit their usual activities because of this disease. Asthma remains a prevalent disease worldwide.
Estimates from worldwide yses such as the Global Burden of Disease Study from the Forum of International Respiratory Societies suggest that asthma affects at least 235334 million individuals 4,. Using data from the International Study of Asthma and Allergies in Childhood surveys, approximately 14 of the worlds children suffer from asthma in any given year. Latin American and English-speaking countries of Australiasia, Europe, North America, and South America have the highest prevalence of childhood asthma, estimated at over.
Reported asthma symptoms in children increased from 1993 to 2003 in low- and middle-income countries. Estimates of asthma prevalence in adults are more difficult to obtain.
Approximately.6 of adults worldwide between the ages of 1845 have asthma symptoms. The morbidity and mortality burden of disease, however, disproportionately affects older adults.
Global measures of disability rank asthma 14th in number of years lost to asthma-associated morbidity and mortality. This most significantly affects individuals in some countries of Europe, Central and South America, Africa, and Austrailasia.