House dust mites and pollens as risk factors in allergic manifestations

House dust mites and pollens play a major role in parthenogenesis of allergic disorders particularly asthma and rhinitis. The most commonly found house dust mites are, Dermatophagoids farinae, Dermatophagoides pteronyssinus and Blomia tropicalis. Parthenium hystrophorus, Morus alba, Ageratum spp, Cannabis sativa, Pennisetun typhoides, Amaranthus, Xanthiumstrumariun, Chenopodium album, Eucalyptus, spp, Chenopodium murale Asphodelus spp, Imperata cylinderica and Brassica compestris were the major pollens found in North India. During present study, 400 patients with allergic manifestations who visited ENT department of Rajindra hospital, Patiala from 2013 to 2015 were considered. The patients were divided into 7 groups based on clinical findings 1. Allergic rhinitis 2. Asthma 3) Allergic rhinitis and Asthma 4. Dermatitis 5. Allergic rhinitis and Dermatitis 6. Asthma and Dermatitis and 7 Control. of the 400 patients, skin prick tests were performed on 165 patients falling in these 7 groups. Based on positivity to skin test and sensitivity to the antigens individuals were also categorized into 7 groups. The results of investigations and skin tests have been discussed in this paper. According to our observation maximum number of patients was sensitive to dust mites followed by dust mites and pollens only.