Pain in the calf muscle of the lower leg is often associated with an injury. The severity of these injuries can vary greatly, as will the treatment and recovery time. Consult a physician--a sports-medicine practitioner if possible--in all cases.
A calf strain occurs when the muscle is pulled or stretched but not torn. In minor cases recovery can take as little as two weeks. Severe cases can require up to four months. The standard treatment for muscle injuries--rest, ice, compression and elevation--is usually advised.
Pain in the Back of the Leg
Pains low in the back of the leg can indicate Achilles tendinitis. This often occurs in athletes with well-developed muscles in the back of their legs that are not balanced by a similar strength in the front. However, it can also be caused by nerve damage associated with diabetes.
Swelling and Pain to Both Legs
If both feet or lower legs are swollen and painful, there might be a systemic problem rather than an injury, which probably would affect only one extremity. Fluid build-up in both legs might be a symptom of heart disease or kidney failure.
Restless Leg Syndrome
Restless leg syndrome can cause pain in the legs. Usual symptoms include legs that feel uncomfortable in any position, along with a need to constantly move. There is no known cause.
A leg that will not support the normal weight of walking might have a broken bone. Other signs include pain, a grinding sound when moving, or a deformed leg if the break is severe. Immediate medical attention is required.