What would cause a knot in your left lower back near the hip?
* Muscle strain: A muscle strain, also known as a pulled muscle, can cause a knot or tightness in the lower back. This can happen due to overuse of the muscles, improper lifting techniques, or sudden movements.* Ligament sprain: A ligament sprain is an injury to the韧带that connect bones. Sprains can cause pain, swelling, and stiffness in the affected area.
* Herniated disk: A herniated disk occurs when the soft, inner material of a spinal disk leaks out through a tear in the disk's outer layer. This can put pressure on the nerves in the spine, causing pain, numbness, and weakness in the lower back and leg.
* Sciatica: Sciatica is a condition that occurs when the sciatic nerve, which runs from the lower back down the leg, is irritated or compressed. This can cause pain, numbness, and weakness in the lower back, buttocks, and legs.
* Osteoarthritis: Osteoarthritis is a degenerative joint disease that can affect the spine, including the lower back. Osteoarthritis can cause pain, stiffness, and swelling in the affected joints.
* Kidney stones: Kidney stones are hard mineral and salt deposits that form in the kidneys. If a kidney stone becomes lodged in the ureter, the tube that carries urine from the kidneys to the bladder, it can cause pain in the lower back and side.
* Urinary tract infection (UTI): A UTI is an infection of the urinary tract, which includes the kidneys, ureters, bladder, and urethra. UTIs can cause pain in the lower back, as well as fever, chills, and frequent urination.
* Endometriosis: Endometriosis is a condition in which tissue similar to the lining of the uterus (the endometrium) grows outside of the uterus. This can cause pain in the lower back, as well as pain during menstruation, intercourse, and bowel movements.
* Ectopic pregnancy: An ectopic pregnancy occurs when a fertilized egg implants outside of the uterus, such as in the fallopian tube. Ectopic pregnancies can cause pain in the lower back, as well as abdominal pain, bleeding, and dizziness.