A report of three cases with a review of the literature
Clinical Orthopaedics and Related Research
1970 Number 73, pages 116-120.
The author reports three cases of recurring severe, short-lived rectal pain, waking the patients in the night. Two of the patients found that inserting a finger into the rectum and pressing on the coccyx relieved the pain. Though the condition is extremely painful, it is harmless, and surgery is not indicated.