Chinese medical literature has been relatively silent on the problem of BPH (8). Disorders of urination have been noted since ancient times, classified as "lin" syndromes, which involve obstruction of urinary flow. In descriptions of the lin syndromes, most times the obstruction of urination is described as accompanied by symptoms that are not characteristic of BPH, such as blood in the urine or passing of stones or cloudy urine. Therefore, while BPH may have been experienced and treated as one of the lin syndromes, it is unclear whether any of the therapies were specific for BPH.