About five years ago I developed extreme aching pain in my right thigh when I drove. The pain was isolated to the thigh and did not extend to the back or leg. The longer the drive the more uncomfortable and intolerable it became. If I could put the car in auto and move my leg it lessoned the discomfort. I worked out extensively at that time. After having knee surgery I had to quit exercising. After a time, there was no more pain or discomfort while driving. I chalked this up to a new vehicle. It is six years later and I have returned to exercise. After about a year, the extreme aching has returned when I drive. The pain is almost intolerable. The minute I stand or walk, the pain immediately ceases and there is no residual pain. It is not a burning pain, more like an extreme ache. I have gone to a couple chiropractors, but massage or streching does nothing to alliviate the pain. Who can diagnose this? I thought maybe sciatic, but it isn't a burning pain typical of nerve pain. Can you help?
First, if you are sitting on your wallet while driving, you need to remove it from your back pocket.
If that is not a problem, then the situation becomes a lot more difficult to ferret out. Especially since it only occurs when you drive your car and nowhere else. If possible, you need to determine what is different about your seat and how you sit in the car. What makes it so different? If you can figure out what is causing the problem, then you can figure out what part of the body is producing the symptoms.
But, it is going to be very difficult to tell what the problem is, until you can figure out why it only occurs in the car. You might want to see an orthopedic surgeon for a full examination of the spine and lower extremities. But, if you are not having any problems when you see the surgeon, the exam probably will not show anything.
You might also want to see a physiatrist, a specialist in physical medicine and rehabilitation. These physicians deal with musculoskeletal disorders and biomechanics. He/she may be able to evaluate how you actually sit in your car and what is causing the problem.
But, again, this is going to be very difficult to determine since it only occurs in one setting. What about your car is causing the problem?