长期口呼吸可致(牙合)异常和面部畸形。这类患儿中％85有鼻堵。鼻腔阻力增加的原因主要有气传变应原变态反应所致的鼻甲水肿、腺样体增殖、严重的鼻中隔偏曲、慢性化脓性鼻鼻窦炎、鼻息肉、发育异常等。常年性变应性鼻炎患者极少发生完全性鼻堵,它们对面部发育有何影响,是本研究希冀解决的问题。研究对象为49名5～10岁有变态反应发病因素的常年性鼻炎患儿。所有儿童均用屋内尘土、狗皮屑、猫皮屑,混合豚草花粉、混合草类花粉、英国车前、混合树木花粉,以及链格孢霉、曲霉、蠕孢霉、单胞支霉、青霉等的浸液作皮肤点刺试验,如果全部为阴性,则再作皮内试验。同时作血嗜酸粒细胞计数和测定。颅面测量采用侧位和后前位放射照相。鼻 Long-term mouth breathing can cause (occlusion) abnormalities and facial deformities. 85% of these children have nasal obstruction. Nasal resistance increases mainly due to airborne allergen allergy caused by turbinate edema, adenoid proliferation, severe septal deviation, chronic suppurative rhinosinusitis, nasal polyps, dysplasia and so on. Perennial allergic rhinitis patients rarely complete occlusion of the nose, their impact on facial development, is the hope of the study to solve the problem. The study was performed on 49 infants with perennial rhinitis aged 5 to 10 who had allergic reaction. All children used house dust, dog dander, cat dander, mixed ragweed pollen, mixed grass pollen, pollen, mixed tree pollen, and Alternaria, Aspergillus, Sporella, Monocytogenes, Mold and other immersion for skin prick test, if all are negative, and then for intradermal test. At the same time for blood eosinophil count and determination. Craniofacial measurements using lateral and posterior radiographs. nose