由额窦炎引起的颅内并发症直接与邻接解剖和血管结构有关,感染扩散到脑实质有两条径路:①感染经额窦后壁骨髓坏死区直接扩散;②较典型的经路是细菌的侵入通过无瓣膜的静脉系统,它连接颅内静脉和额窦粘膜血管,导致败血性逆行性栓塞性静脉炎,发生矢状窦栓塞。额窦炎典型临床表现为额部疼痛、压痛、低热、乏力,通常继发于上呼吸道感染。随着病情的发展骨膜下脓液向前发展成硬脑膜外脓肿。颅内压增高产生头痛和呕吐。脑膜刺 The frontal sinusitis caused by intracranial complications directly related to adjacent anatomy and vascular structure, the infection spread to the brain parenchyma has two pathways: ① infected by the posterior wall of the posterior wall of the bone marrow in the direct diffusion of necrotic areas; ② more typical pathways are bacteria The invasion through the valvular venous system, which connects the intracranial venous and frontal mucosal blood vessels, leading to septic retrograde thrombophlebitis, the occurrence of sagittal sinus embolism. Frontal sinusitis typical clinical manifestations of forehead pain, tenderness, fever, fatigue, usually secondary to upper respiratory tract infection. As the disease progresses, the subperiosteal pus develops forward into a dural abscess. Increased intracranial pressure produces headache and vomiting. Meninges