frontal sinusitis

例句：

1. 1.He was diagnosed with frontal sinusitis and required immediate treatment.
   他被诊断出患有前额窦炎，需要立即治疗。
2. 2. Frontal sinusitis can cause severe headaches and facial pain.
   前额窦炎会导致严重的头痛和面部疼痛。
3. 3.The patient was advised to avoid close contact with others until the condition improved.
   患者被建议在病情好转之前避免与他人密切接触。