monathetosis

例句：

1. 1. The disease is caused by a rare genetic mutation.
   这种疾病是由一种罕见的遗传突变引起的。
2. 2. Monathetosis is a rare condition that affects only a small percentage of the population.
   莫纳赫塞特症是一种罕见病症，仅影响一小部分人群。
3. 3. Researchers are still trying to understand the underlying causes of monathetosis.
   研究人员仍在努力理解莫纳赫塞特症的底层原因。