What complaint does Ruth Bailey, the 38-year-old woman, have?

Ruth Bailey's primary complaint is severe lower back pain. This aligns with common presentations in emergency medicine, where lower back pain can be indicative of various underlying issues, such as muscle strain, herniated discs, or in some cases, more serious conditions like kidney problems or infections.

Lower back pain can significantly affect a patient's quality of life and ability to perform daily activities, making it a serious concern that often leads individuals to seek emergency care. Factors such as the intensity and duration of the pain, any associated symptoms, and the patient's medical history need to be thoroughly assessed to determine the appropriate course of action.

Addressing lower back pain would typically involve both pain management and an investigation into the root cause, considering it can stem from a wide range of conditions.