erythema gyratum serpens

例句：

1. 1. Erythremia is a rare disease that affects the red blood cells.
   红血病是一种罕见的疾病，影响红细胞。
2. 2.The patient was diagnosed with erythremia and required immediate treatment.
   患者被诊断出患有红血病，需要立即治疗。
3. 3. Erythremia can be caused by various factors, including genetics and environmental exposures.
   红血病可能由各种因素引起，包括遗传因素和环境暴露。