She has been experiencing a burning sensation and pain in her right calf muscle and right foot for the past 2 years. The pain is not severe while standing, walking, or doing household work, but it becomes worse after work when she rests, especially in the afternoon and at night. The burning sensation is mainly in the right calf and she also has pain in the right foot. There is no recent injury or trauma. The symptoms have been persistent for the last 2 years and are affecting her comfort and sleep. Could this be due to a nerve problem, muscle problem, poor blood circulation, or another condition? What investigations or treatment would you recommend?