Background: Accurate characterisation of subjects is essential to interpret da ta from studies investigating preschool wheezing. Aim: To assess whether a video questionnaire (VQ) identifies upper airway abnormalities in preschool children with reported wheeze. Methods: Forty three children (median age 17 months, range 3-58) undergoing fibreoptic bronchoscopy for clinical investigation of trouble some noisy breathing at a tertiary centre were studied. Parents were shown a VQ with four clips (wheeze, stridor, and two other upper respiratory noises) and ch ose the clip(s) resembling their child’s main symptom. Doctor observed symptoms, parental reported symptoms, and symptoms identified on VQ w ere related to bronchoscopy. Results: Thirty subjects had wheeze as the main sym ptom: 19 had doctor observed wheeze (DOW) and 11 had parental reported wheeze (R W). Parents of two of the subjects with RW identified wheeze alone on VQ and bot h had normal bronchoscopic findings. Five of the remaining nine subjects with RW had upper airway abnormalities at bronchoscopy. Parents of six subjects with RW identified a noise other than wheeze on VQ; four of these had upper airway abno rmalities. Parents of two subjects with RW did not identify a noise on VQ; one h ad upper airway abnormalities. Of the 19 with DOW, nine parents identified wheez e alone on VQ, and all had a normal upper airway. Parents of nine subjects with DOW identified a noise other than wheeze as an equal or only symptom, (no noise identified in one), and five had upper airway abnormalities. Conclusion: A VQ he lps to identify upper airway abnormalities in preschool children with a history of wheezing. Aim: To assess whether a video questionnaire (VQ) identifies upper airway abnormalities in preschool children with reported wheeze. Methods: Forty three children (median age 17 months , range 3-58) undergoing fibopoptic bronchoscopy for clinical investigation of trouble some noisy breathing at a tertiary center were studied. Parents were shown a VQ with four clips (wheeze, stridor, and two other upper respiratory noises) and ch ose the clip ( Results: Thirty subjects had wheeze as the main sym ptom: 19 had doctor observed wheeze (DOW) and 11 had parental reported wheeze (RW). Parents of two of the subjects with RW recognized wheeze alone on VQ and bot h had normal bronchoscopic findings. Five of the remaini ng nine subjects with RW had upper airway abnormalities at bronchoscopy. Parents of six subjects with RW identified a noise other than wheeze on VQ; four of these had upper airway abno rmalities. Parents of two subjects with RW did not identify a noise on VQ; one h ad upper airway abnormalities. Of the 19 with DOW, nine parents identified wheez e alone on VQ, and all had a normal upper airway. Parents of nine subjects with DOW identified a noise other than wheeze as an equal or only symptom, ( no noise identified in one), and five had upper airway abnormalities. Conclusion: A VQ he lps to identify upper airway abnormalities in preschool children with a history of wheezing.