1、Phlegmasia is a condition characterized by severe pain and swelling in the affected limb.
（“Phlegmasia”是一种以患肢严重疼痛和肿胀为特征的疾病。）
2、Prompt medical attention is necessary for phlegmasia to prevent further complications.
（为了防止进一步的并发症，对于phlegmasia来说，及时就医是必要的。）