2 Answers

I RECOMMEND SEEING A DOCTOR ASAP!

Your friends symptoms are similar to Sciatica

Sciatica pain: Pain from sciatica tends to start in the back and radiate to the buttocks and to the front or side of the hip and down one or both legs.

Sciatica symptoms include:

Pain. It's especially likely to occur along a path from your low back to your buttock and the back of your thigh and calf.

Numbness or muscle weakness along the nerve pathway in your leg or foot. In some cases, you may have pain in one part of your leg and numbness in another.

Tingling or a pins-and-needles feeling, often in your toes or part of your foot.

A loss of bladder or bowel control. This is a sign of cauda equina syndrome, a rare but serious condition that requires emergency care. If you experience either of these symptoms, seek medical help immediately.

When to see a doctor

Mild sciatica usually goes away given time and patience. Call your doctor if self-care measures fail to ease your symptoms or if your pain lasts longer than a week, is severe or becomes progressively worse. Get immediate medical care if:

You experience sudden, severe pain in your low back or leg and numbness or muscle weakness in
your leg

The pain follows a violent injury, such as a traffic accident

You have trouble controlling your bowels or bladder

http://www.bing.com/health/article/mayo-126211/Sciatica?q=sciatica

MAKE AN APPOINTMENT WITH YOUR DOCTOR!

Self care

While you're waiting for your appointment, you may find some relief by using over-the-counter pain relievers, such as aspirin, ibuprofen (Advil, Motrin, others) or acetaminophen (Tylenol, others). You may also benefit from applying alternating cold and heat to the area that's causing you pain.

Tell your friend to see a doctor as soon as possible.