ASTHMA PRECIPITANTS

  • viral respiratory infection/ URTI
  • change in temperature and humidity (cold, dry air)
  • pollutants, dust, fumes, strong odours (perfume)
  • exercise
  • gastro-oesophageal reflux and microaspiration
  • drugs (aspirin, beta blockers, NSAID's)
  • allergic reaction
  • chemicals (tartrazine dye), food additives
  • emotional stress

often none obvious