26 yro fem athlete, for last month gotten numbness in lt foot w/ 2-3mile run, lasts 30min then goes away. today numb in lt/rt foot & lt hand? whatisit

Many possibilities: This could be due to the repetative impact of running, however a big question is whether the numbness is associated with a decrease in blood flow -- this can be due to an anatomic variant called popliteal entrapment, or chronic compartment syndrome. Your physician can help you sort this out with a non-invasive ultrasound exam.

See neurologist: Symptoms may indicate transient ischemic attacks or other serious neuro condition. Needs to see neurologist for detailed exam, lab tests and imaging.

Peripheral nerve: First, regarding feet, you might check with podiatrist for over pronation which could contribute to tarsal tunnel syndrome in your feet. The hand issue might be a carpal tunnel or cubital tunnel process. I truly doubt you have a systemic neurological disorder, and this can be handled by your family doctor.