Oral hyposensitization of children with pollinosis or house-dust asthma.

25 years of experience have proven oral hyposensitization to be an effective and safe method for specific treatment of respiratory allergies in children up to the age of 10-12 years. For pollinosis aqueous extracts or pollen powder are used. Results after at least two cures are comparable to those observed after subcutaneous hyposensitization. In house-dust asthma oral hyposensitization is performed either with commercially available extracts or with extracts prepared from the patient's own house-dust. The way to collect such dust samples, their use in testing and the preparation of extracts from it are described. Long-term results with oral hyposensitization of children with house-dust asthma are good.