title: Prevalence of skin test reactivity to aeroallergens in the Pakistani population.
abstract: OBJECTIVE
  The prevalence of allergies has increased in all parts of the world. The present study was conducted to determine the prevalence of sensitivity to common aeroallergens, pollen, thresher dust and cotton dust, in Pakistan.
  
  
  METHODS
  Retrospective cohort study.
  
  
  METHODS
  Record of 65067 who attended the Allergy Centre, National Institute of Health, Islamabad, Pakistan from January 2007 to August 2008 was retrieved. Subjects that were skin prick test (SPT) negative and those that were SPT positive to aeroallergens were extracted and subcategorized on the basis of the 8 provinces of Pakistan, including, Islamabad Capital Territory, Punjab, Baluchistan, Sindh, Northern Areas, Kashmir, North Western Frontier Province (NWFP) and Federally Administered Tribal Areas (FATA). Monthly analysis of prevalence of allergies was also determined.
  
  
  RESULTS
  Of the total, 68.6% were SPT positive. The highest number of affected individuals was from the Punjab region (41%). The highest number of cases of all aeroallergens was reported in the month of August (3532, 13.7%). Significant high correlations were observed between mixed pollen, thresher dust and raw cotton and allergic rhinitis, asthma, uriticaria and allergic conjunctivitis. There was no significant correlation between allergen sensitivity and atopic edema.
  
  
  CONCLUSIONS
  A high prevalence of sensitivity to aeroallergens is observed in the Punjab Province of Pakistan.
authors.affiliation: Department of Biosciences, COMSATS Institute of Information Technology, Islamabad 44000, Pakistan. asifa_ahmed@comsats.edu.pk
authors.forename: A
authors.initials: A
authors.lastname: Ahmed
authors.forename: K
authors.initials: K
authors.lastname: Minhas
authors.forename: S
authors.initials: S
authors.lastname: Micheal
authors.forename: F
authors.initials: F
authors.lastname: Ahmad
mesh_terms: D000383:Agriculture; D000485:Allergens / Q000276:immunology*; D004391:Dust; D003368:Gossypium; D006801:Humans; D006967:Hypersensitivity / Q000453:epidemiology*; D010154:Pakistan / Q000453:epidemiology; D011058:Pollen; D015995:Prevalence; D012882:Skin Tests
chemical_list: D000485:Allergens; D004391:Dust