syssarcosis

例句：

1. 1. She was diagnosed with systemic sclerosis, which causes skin to become very thick and hard.
   她被诊断出患有系统性硬化症，这是一种导致皮肤变得非常厚和硬的疾病。
2. 2. The patient's condition worsened over time, leading to a diagnosis of systemic sclerosis.
   患者的病情随着时间的推移而恶化，最终被诊断为系统性硬化症。
3. 3. Symptoms of systemic sclerosis include fatigue, joint pain, and difficulty breathing.
   系统性硬化症的症状包括疲劳、关节疼痛和呼吸困难。