Differential Diagnosis for Back Pain and Constipation
- Single most likely diagnosis
- Musculoskeletal strain: This is often the most common cause of back pain, and constipation can exacerbate the discomfort due to increased abdominal pressure.
- Other Likely diagnoses
- Degenerative disc disease: This condition can cause back pain and, if the nerves are compressed, can also lead to constipation due to decreased motility of the intestines.
- Chronic constipation: Severe constipation can cause back pain due to the strain from prolonged bowel movements or the pressure exerted by a full bowel on the spine.
- Spinal stenosis: Narrowing of the spinal canal can cause back pain and, if the nerves that control bowel function are affected, can lead to constipation.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Cauda equina syndrome: A serious condition where the nerves in the lower spine are compressed, leading to severe back pain, constipation, and potentially permanent nerve damage if not promptly treated.
- Spinal cord compression: Compression of the spinal cord can cause back pain, constipation, and other neurological symptoms, requiring immediate medical attention to prevent permanent damage.
- Abdominal aortic aneurysm: Although less common, a ruptured abdominal aortic aneurysm can cause severe back pain and constipation due to the pressure exerted on surrounding structures.
- Rare diagnoses
- Multiple sclerosis: A chronic autoimmune disease that can cause a wide range of neurological symptoms, including back pain and constipation, due to the demyelination of nerve fibers.
- Parkinson's disease: Although primarily known for its motor symptoms, Parkinson's disease can also cause constipation and back pain due to rigidity and decreased mobility.
- Spinal tumors: Tumors in the spine can compress nerves, leading to back pain and constipation, among other symptoms, and require prompt diagnosis and treatment.