Unexplained soreness and pain at the base of the left thigh

Generally, unexplained soreness in the left groin area may be caused by muscle strain, swollen lymph nodes, lumbar disc herniation, or other conditions. It is recommended to seek medical attention at a hospital to determine the exact cause. Specific analyses are as follows:

1. Muscle Strain

When thigh muscles are stretched for prolonged periods, they remain in a state of continuous tension. Without adequate rest, this can easily lead to aseptic inflammation and, over time, result in muscle strain, causing pain in the left leg's groin area. It is advised to get sufficient rest and apply local heat therapy or massage to promote symptom relief.

2. Swollen Lymph Nodes

Infections, injuries, or abnormal cell proliferation and metabolism in the thigh region may all potentially cause lymph node swelling, leading to leg pain. Under medical guidance, antibiotics such as azithromycin granules, cefalexin capsules, or cefradine capsules may be prescribed to improve symptoms.

3. Lumbar Disc Herniation

Lumbar disc herniation typically causes lower back pain. If the protruding tissue compresses the spinal cord or cauda equina nerves, pain may radiate from the lower back to the buttocks, thighs, and other areas. Treatment under a doctor’s supervision—such as traction or massage—may help reposition the protruding tissue, relieve pressure on nerve roots, and alleviate discomfort.

In addition, avascular necrosis of the femoral head may also cause pain in the left thigh. It is recommended to actively pursue treatment under medical guidance to improve symptoms.