OBJECTIVES Allergic rhinitis and atopy are more common in urban than rural environments. Non-allergic rhinitis has not been studied to a great extent. We aimed to assess the relationship of rhinitis symptoms with different profiles of allergic sensitization, comparing this in rural and urban environments. METHODS The study population consisted of population-based cohorts of adults aged 26-60 ...

Type 2 T-helper cell (Th2)-skewed immunity is associated with successful pregnancy and the ability to easily direct immune responses to a Th2-polarised profile may be an evolutionary benefit. The Th2-like immunity associated with allergic disease might generate favourable effects for the maintenance of pregnancy, but could also promote development of Th2-like immune responses and allergic disea...

In this study, we aimed at studying the benefit of Urtica dioica root extract in the management of allergic rhinitis. In a randomized double blind clinical trial, 74 patients with the signs and symptoms of allergic rhinitis and a positive skin prick test were randomly divided into 2 groups. The study group was treated with routine allergic rhinitis treatment and Nettle root extract (Urtidin®, B...

The study aimed to investigate factors associated with respiratory symptoms in workers in a medium-density fiberboard (MDF) furniture factory in Eastern Thailand. Data were collected from 439 employees exposed to formaldehyde and MDF dust using questionnaire and personal sampler (Institute of Occupational Medicine; IOM). The average concentration of formaldehyde from MDF dust was 2.62 ppm (SD 3...

Allergic rhinitis is a common disorder and involves the reaction to environmental allergens with resultant nasal and eye symptoms. The pathophysiologic mechanisms of the eye symptoms in allergic conjunctivitis include a direct effect on the eye by deposited allergen and indirect effects related to the deposition of allergen in the nasal mucosa. One of these proposed mechanisms is the existence ...

allergic diseases are frequent in children and their prevalence and severity differ in the different regions of the world. the association between pet ownership in childhood and subsequent asthma and sensitization is very controversial. in our survey conducted with standardized method (international study of asthma and allergies in childhood), 3200 children 6-7 years old were questioned regardi...

Cases of rhinitis can be divided into allergic and non-allergic and salient features from the history usually enable your patient to be assigned to one of these two categories. Allergic rhinitis is suspected when there is family history of atopic illnesses or when a child with rhinitis has co-existent asthma or atopic dermatitis. Seasonality of symptoms, provocation of symptoms by exposure to a...