指甲全没了，不痛又不痒！这是什么病？

有人患指甲尽行脱下，不痛不痒 A man's fingernails had fallen off from the roots, but he could feel no pain or itching.
此乃肾经火虚，又于行房之后，以凉水洗手，遂成此病。 He had kidney channel vacuity fire and washed his hands with cold water after sexual intercourse, and this was believed to have caused the illness.

方用六味汤加柴胡、白芍、骨碎补，治之而愈。 Thus, the Six Ingredients Decoction with bupleurum, radix paeoniae alba and rhizoma drynariae was used to cure him.
——何靖摘自《奇症汇》 ——FromCollection of Strange Diseases Translator: He Jing
Glossary 1. fingernail [fɪŋgəneɪl] n. 指甲 2. piptonychia[piptə'nikjə] n. 脱甲 3.shedding ['ʃediŋ] n. 脱落；蜕落