Intermittent claudication in the left leg only can also be seen in a variety of conditions. The first thing to consider is vascular pathology. These patients often also have cool, purple or pale skin on the affected limb and a self-conscious chill in the limb, and may also have symptoms of muscle atrophy. In addition, many orthopaedic conditions, such as lumbar spinal stenosis and lumbar disc herniation, may also manifest as pain and numbness in the left lower limb only, mainly related to the location of the nerve compression. Prompt medical consultation is recommended for diagnosis based on x-ray and ultrasound findings.