Diagnosing asthma in the young child.
D000367:Age Factors; D001249:Asthma / Q000175:diagnosis*; D001980:Bronchi / Q000002:abnormalities; D001990:Bronchiolitis, Viral / Q000175:diagnosis; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005547:Foreign Bodies / Q000175:diagnosis; D006801:Humans; D007223:Infant; D012135:Respiratory Sounds / Q000175:diagnosis; D012882:Skin Tests