Imbalances in Fire Yin in the body
In Chinese medicine the [Heart] regulates the flow of [Blood]. Disharmonies of the [Heart] are often revealed in the condition of the tongue and/or the face. The [Heart] stores [Shen], one of the fundamental substances which may be loosely equated with vital spirit, and clear healthy [Shen] is often recognized as sparkle or light in the eye. When the [Shen]-storing of the [Heart] is impaired, symptoms of deficient [Shen] may arise, such as unbalanced feelings, unclarity of speech, insomnia, excessive dreaming or forgetfulness. In more extreme cases there may appear serious mental disorders.