Fibromyalgia Symptoms HOME. Home âº Fibromyalgia Medication âº Gabapentin For Fibro. Fibromyalgia sufferers deal with myriad symptoms, not the least of which is pain. It is a chronic disorder that is characterized by ongoing widespread muscle pain and tenderness, and is usually accompanied by fatigue, insomnia, depression and anxiety.
In the lower thigh/above the back of the knee, the sciatic nerve divides into two nerves, the  tibial and peroneal nerves, which innervate different parts of the lower leg: Peroneal nerves. The peroneal nerves travel laterally (sideways) along the outer part of the knee and down into the upper foot.
The sciatic nerve is the dominant nerve that innervates the lower back and the lower extremities. It travels from the lower spine, through the pelvis, and down each leg. It is the longest and widest nerve in the human body. The sciatic nerve primarily supplies the muscles of the lower leg, including the calf, ankle, and the back portion of the knee. It also supplies sensation to the sole of the foot, the ankle, the entire lower leg, and the back of the thigh. The sciatic nerve branches into different parts of the body along its path, hence its ability to supply such a large area of the body.