The elderly man had to stop frequently due to claudication caused by poor blood circulation.

claudication 来自拉丁语 claudicare（跛行），在医学上特指"间歇性跛行"，指因动脉供血不足导致行走时肢体疼痛而被迫停步的症状。该词由词根 claud-（跛行）和后缀 -ication（表示状态或情况）组成。