Question about symptoms?

My doctor initially thought I had a herniated disc, but mri and xray of the lumbar spine are normal (they said).  Ive been referred to a neurologist.  My symptoms are severe lower back pain (tailbone area), no reflexes in the knees when hit with a rubber hammer, severe leg pain mainly in the thighs, feet are always cold, and I feel like walking across a room is an exhausting task?  What could this be and can a neurologist help me with it?

[Dr. Kokil Mathur]

Hi
Welcome to the MedHelp forum!
The MRI may be normal and yet you may have nerve compression symptoms. This needs to be tested by nerve conduction studies to find out which level is affected.
Since there is thigh pain and the feet are cold, deep vein thrombosis should be ruled out. Color dopplar or duplex ultrasounds are usually done for this. Other causes could be peripheral neuropathies of diabetes, hypothyroidism, Lyme's or even lupus. Blood tests should be done to rule these out.
Do discuss this with your doctor and get yourself examined. Take care!