Swelling and pain behind your leg joints, along with nerve discomfort, may be caused by muscle strain, tendon inflammation, nerve irritation, overuse, or underlying joint issues. It is best to see a doctor or physiotherapist to determine the cause and receive the appropriate treatment. Until then, rest your leg, try gentle stretches, avoid heavy activity, and apply a cold pack for swelling or a warm pack to relax the muscles. You may also use paracetamol or an anti-inflammatory gel to help ease the pain.

Pain in the knee and upper leg after walking may be due to muscle strain, overuse, or early joint problems. Rest your leg, avoid long walks or strenuous activity for a few days, try gentle stretching, and apply a cold pack to reduce inflammation. Wearing supportive footwear and using a knee brace may also provide relief. If the pain persists or worsens, consult a doctor for a proper examination and treatment.