症状学

例句：

1. 1. The patient was diagnosed with a chronic disease and started on symptomatic treatment.
   病人被诊断出患有慢性疾病，并开始接受症状治疗。
2. 2.Symptomatic infections can be treated with antibiotics.
   症状感染可以通过抗生素治疗。
3. 3.The researcher analyzed the symptoms of the disease in order to develop a better understanding of it.
   研究人员分析了疾病的各种症状，以便更好地理解它。