Pain on the side of the lower back, often described as flank pain, can stem from various sources. It affects the area between your pelvis and ribs, on either side of your lower back. Several conditions can cause this pain.
Common Causes of Flank Pain
- Kidney stones: These hard deposits in your kidneys can cause severe, sharp pain that radiates to your lower back and side.
- Urinary tract infections (UTIs): UTIs can cause pain in your lower back, along with other symptoms like burning during urination and frequent urination.
- Muscle strains: Overexertion or injury to the muscles in your back can lead to pain in the lower back and side.
- Arthritis of the spine: The slow degeneration of spinal joints is a frequent cause of lower back pain, which can sometimes be localized to one side.
The pain can manifest in different ways, ranging from a dull ache to a sharp, stabbing sensation, and may even radiate down a leg. The location and characteristics of the pain can provide clues to the underlying cause. For example, pain localized to one side suggests a kidney-related issue or a muscular problem in that specific area, whereas more generalized lower back pain might be linked to spinal arthritis.
Identifying the Source
Pinpointing the precise cause requires a proper diagnosis by a healthcare professional. They will consider your medical history, conduct a physical exam, and may order imaging tests (like X-rays or ultrasounds) to determine the origin of your pain.
Important Note: While many causes of flank pain are relatively benign and treatable, some could indicate more serious conditions. It’s crucial to consult a doctor for proper evaluation and treatment, especially if the pain is severe, persistent, or accompanied by other symptoms.
Several sources corroborate this information: Cleveland Clinic notes flank pain as a symptom of various conditions, while Mount Sinai's health library defines flank pain specifically as pain on one side of the body between the upper abdomen and the back. Sesame Care highlights the possibility of internal organ issues causing unilateral back pain. These sources emphasize that diagnosis and treatment are best managed by medical professionals.
