asthma is a chronic inflammatory disorder of the airways. the stress is a factor for asthma which indicates a disorder in the function of communicational mediators of nervous and  immunological systems  such  as  neurotransmitters.  a  study  indicated  that  blood serotonin concentration increases in asthmatic patients. other study indicates that one kind of the serotonin  receptors, named 5ht...

Asthma is a chronic disease, characterized by reversible airway obstruction, airway inflammation and hyper-reactivity. The prevalence of asthma has risen dramatically over the past decade, affecting around 300,000,000 people. The etiology is multifactorial, with genetic, epigenetic, developmental and environmental factors playing a role. A complex interaction between the intrauterine environmen...

Background: Asthma, allergic rhinitis and eczema as a common disorder in childhood, has many epidemiologic variations in different geographic areas. This study aimed at determining the prevalence of pediatric allergic disease in rural area of Babol. Methods: This analytical-cross sectional study was performed in 2012 by random sampling on 2 groups of children the first grou...

BACKGROUND During the latter half of the 20th century, the prevalence of asthma and many other allergic diseases has increased. Information on asthma prevalence trends among adults after 2010, especially regarding studies separating allergic asthma from non-allergic asthma, is lacking. OBJECTIVE The aim was to estimate prevalence trends of current asthma among adults, both allergic and non-al...

asthma environmental triggers play important roles in severity of disease. passive smoking could exacerbate asthma symptoms and enhance the decrease in lung function. cotinine levels could be a reflection of passive exposure to the cigarette both in adults and pediatrics. the aim of this study was to determine degree of association of asthma severity and cotinine level as a marker of passive sm...

Introduction:The prevalence of atopic diseases has increased in recent decades dramatically. The most common aeroallergens in Northeastern Iran have not been fully defined. Define the most common aeroallergens in allergic patients based on the skin prick test (SPT) was aimed in this investigation.Materials and Methods:This cross-sectional study enrolled 1,006 allergic patients (aged 1–86 years)...

the study aimed to assess the prevalence and associated risk factors of immediate-type hypersensitivity reactions (hrs) to drugs in workers. the data consisted of 1152 questionnaires obtained from adult men that consisted of questions on hrs induced by drugs. the prevalence of self-reported drug hrs was 3.6% for all reactions. hrs were most common to beta-lactam antibiotics (51.2%) followed by ...

Airborne allergens are the major cause of allergic rhinitis and asthma. Daily exposure comes from indoor sources, chiefly at home but occasionally at schools or offices. Seasonal exposure to outdoor allergens, pollens, and molds is another important source. Exposure to unusual substances at work causes occupational asthma, accounting for about 5% of asthma in adults. Indoor and outdoor air poll...

The prevalence of asthma has been increasing in parallel with trends in vitamin D deficiency. Some researchers have suggested a causal link between vitamin D deficiency and the development of asthma [1], while others have suggested vitamin D supplementation, rather than deficiency, as the link [2,3]. Wjst et al. published two ground-breaking articles concerning the relationship between the incr...

\ 7arious drugs and methods have been used in the * treatment of asthma in Japan. The basic treatment in Japan is presumably similar to other countries. For symptomatic treatment, bronchodilators which include (J-agonists and xanthine derivatives, are considered to be the first choice drugs. Steroids are used for intractable or life-threatening asthma. Other medications include anticough prepar...