Background As a non-invasive parameter of lower airway inflammation, fraction of exaled nitric oxide (FeNO) concentration has been known to be related with bronchial hyperreactivity in asthma patient. FeNO may be increased in atopy related diseases (e.g. allergic rhinitis) but relationship of FeNO and development of allergic rhinitis in asthma is unknown. The aim of this study was to investigat...

OBJECTIVE To examine the associations between pet keeping in early childhood and asthma and allergies in children aged 6-10 years. DESIGN Pooled analysis of individual participant data of 11 prospective European birth cohorts that recruited a total of over 22,000 children in the 1990s. EXPOSURE DEFINITION: Ownership of only cats, dogs, birds, rodents, or cats/dogs combined during the first 2...

The aim of current study is to describe clinical similarities and differences between atopic and non-atopic asthma in children. In a cross-sectional study, 95 asthmatic children (75 allergics and 20 nonallergics) were included in the study. Demographic, clinical, and familial history were compared between two groups. There was no significant differences between variables like sex, age of onset ...

There is compelling evidence of a close relationship between the upper and lower airways in asthma and rhinitis. Rhinitis is present in the majority of patients with asthma, and a significant minority of patients with rhinitis have concomitant asthma. Similarities between the two conditions occur in the nature of the inflammation present in the target tissues. A common initiating step in the in...

Background: Several studies have shown links between the upper and lower airways in allergic patients. Objectives: This study aimed to evaluate the prevalence of rhinitis in patients with allergic asthma attending allergy outpatient clinics and to examine the interrelationship between both conditions. Methods: An epidemiological prospective study was carried out during the period 2004-2005 and ...

Allergic march: Rhinitis to asthma - IJOAS- Print ISSN No: 2582-4147 Online No:- 2582-421X Article DOI 10.18231/j.ijoas.2022.025, IP Journal of Otorhinolaryngology and Allied Science-J Otorhinolaryngol Sci

The prevalence of asthma in the most advanced ages is similar to that of younger ages. However, the concept that older individuals may suffer from allergic asthma has been largely denied in the past, and a common belief attributes to asthma the definition of "rare" disease. Indeed, asthma in the elderly is often underdiagnosed or diagnosed as COPD, thus leading to undertreatment of improper tre...

BACKGROUND Some western countries recently have shown a slowdown in the incidence of allergic diseases after worldwide increasing trends, but there are few data from Asian populations concerning changing trend of allergic diseases. We evaluated the recent trends in the prevalence of asthma and other allergic diseases in Korea. METHODS From the database of Korean National Health Insurance, a n...

background: the prevalence of allergic diseases has risen in the last decades. the objective of this study was to determine the common allergens in children via the skin prick test. methods: this cross-sectional study recruited 313 allergic children (4 months to 18 years old) referred to the asthma and allergy clinic of children’s medical center in tehran. a questionnaire containing demographic...

Epidemiological studies have revealed an inverse association between Helicobacter pylori infection and the incidence of allergic asthma. This association is consistent with the hygiene hypothesis, which posits that exposure to microbes early in life prevents the later development of allergic diseases, and has been reproduced in mouse models of asthma. In this issue of the JCI, Oertli and collea...