硬化症

例句：

1. 1. He has been suffering from a rare form of scleroderma for years.
   他患有一种罕见的硬化症已经好几年了。
2. 2. The doctor diagnosed him with scleroderma, which can lead to severe skin problems.
   医生诊断他患有硬化症，这可能导致严重的皮肤问题。
3. 3. Scleroderma is a chronic condition that affects the skin and joints.
   硬化症是一种慢性疾病，影响皮肤和关节。