What is leg weakness (unilateral)?
A person with leg weakness (unilateral) has muscle weakness in one leg. Weakness may be caused by a malfunction of the brain, the spinal cord, or nerves. These structures transmit signals from the brain, which stimulate the muscles to move the legs.

What are the symptoms of leg weakness (unilateral)?
Symptoms that may occur with leg weakness (unilateral) include back pain, arm weakness (unilateral), difficulty speaking, difficulty walking, falling to one side, fatigue, and numbness and tingling in one arm and leg.

How does the doctor treat leg weakness (unilateral)?
Treatment for leg weakness (unilateral) depends on the underlying cause. Treatment may include medications, vitamin supplements, and surgery.