尾骨痛的诊断主要基于临床实际情况，在全球范围内无准确的发病率报道。男女比例为1:5。[2]Maigne JY, Doursounian L, Chatellier G. Causes and mechanisms of common coccydynia: role of body mass index and coccygeal trauma. Spine. 2000;25:3072-3079.http://www.ncbi.nlm.nih.gov/pubmed/11145819?tool=bestpractice.com无种族差异。平均发病年龄为40岁，但各年龄段均可发病。[3]Kim NH, Suk KS. Clinical and radiological differences between traumatic and idiopathic coccygodynia. Yonsei Med J. 1999;40:215-220.http://www.ncbi.nlm.nih.gov/pubmed/10412331?tool=bestpractice.com[4]Peyton FW. Coccygodynia in women. Indiana Med. 1988;81:697-698.http://www.ncbi.nlm.nih.gov/pubmed/3171154?tool=bestpractice.com多数病例为创伤导致（60%至70%），其余为特发性（30%至40%）[2]Maigne JY, Doursounian L, Chatellier G. Causes and mechanisms of common coccydynia: role of body mass index and coccygeal trauma. Spine. 2000;25:3072-3079.http://www.ncbi.nlm.nih.gov/pubmed/11145819?tool=bestpractice.com[3]Kim NH, Suk KS. Clinical and radiological differences between traumatic and idiopathic coccygodynia. Yonsei Med J. 1999;40:215-220.http://www.ncbi.nlm.nih.gov/pubmed/10412331?tool=bestpractice.com[4]Peyton FW. Coccygodynia in women. Indiana Med. 1988;81:697-698.http://www.ncbi.nlm.nih.gov/pubmed/3171154?tool=bestpractice.com
