Shenjing shuairuo Mandarin for the weakness of the nervous system. It is a cultural syndrome that integrates conceptual categories of traditional Chinese medicine with the Western diagnosis of neurasthenia. It is defined as a syndrome composed of three out of five non-hierarchical symptom clusters. These are weak emotions excitement nervous pain and sleep. Copyright Notice Adapted from Wikipedia. Text is available under the  Creative Commons Attribution-ShareAlike License 3.0 ; additional terms may apply.