1 sentence for 红斑 (hóng​bān — erythema)

1. 一天晚上，他回到自己的公寓，发现自己的腿上有红斑。

   yī​tiān wǎn​shang, tā huí dào zì​jǐ de gōng​yù, fā​xiàn zì​jǐ de tuǐ shang yǒu hóng​bān.

   One evening, he returned to his apartment and found red spots on his legs.

   Source: CCMatrix