Can I have sciatica without back pain? I only have pain behind knee and calf with occasional thigh, ankle and butt pain.

Yes. All the symptoms you are referring to are consistent with Sciatica. See your doctor. I really like Physical Therapy for sciatica. You may want to consider this as well, but ask your doctor what is the best course of treatment.

Related Questions

What can be done for my low back pain while I wait to see the doctor? The pain is severe and is burning down my leg to my knee? Please help

Possible disc. If you have a pinched nerve in your back due to a "slipped disc", you may find relief in a position of low pressure on this disc. You may want to try to lie on your back with your legs bent and resting. Read more...
See below. Rest, heat and gentle stretching may help while you wait to be seen. Read more...
A few things. If nsaids are not helpful, you've exhausted most otc meds. Tylenol (acetaminophen) is an option, but if that does not help please see your doctor for other options. Also physical therapy can be helpful, otherwise a spine specialist evaluations may be needed. Read more...

I have low back pain my knee and leg are cold what could be wrong?

Sciatica. Sciatica, or in medical terms lumbosacral radiculopathy, is commonly associated with differences in temperature to the affected extremity. Not all patients will complain of noticeable weakness, sensory loss or shooting pain. A good physical exam will usually confirm the diagnosis, however. The good news is this condition is usually quite treatable. Read more...
PAD. A cool leg to touch, not "feels cool, " implies a problem with blood flow. This may be your first indication of peripheral arterial disease. If accompanied by pain that is worsening, get to the er. Otherwise, consider taking an Aspirin a day and be seen asap by your doc or a vascular surgeon. If this is just a sensation of cold, then a nerve may be compressed. That is not an emergency. Read more...