Former British Prime Minister Margaret Thatcher pauses at the casket of former President Ronald Reagan as he lies in state in the Capitol Rotunda on June 9, 2004, on Capitol Hill in Washington.
Yes, perhaps many of the causes are not severe, but there are conditions that should cause concern and require immediate consultation with a physician. Throbbing leg pain could be caused by sciatica. The sciatic nerve is the longest of all the nerves in our body. This nerve originates from the lower back and proceeds all the way down to the thighs of each leg and to the feet. The sciatic nerve supplies sensation to the leg.
There are many medical conditions that can cause leg pain. 1  Fibromyalgia sufferers frequently experience restless leg syndrome and painful lower leg cramps.  Leg pain can also be associated with autoimmune disorders such as multiple sclerosis and rheumatoid arthritis. Thyroid disease can also cause pain in the legs.