The most common cause of weakness and leg pain is cold, which leads to weakness and fatigue, and then the symptoms of body aches and pains. 2, there may be weakness and leg pain caused by low potassium, so you must go to the hospital to check the blood potassium to clarify, if the blood potassium is low, you can promptly replenish potassium to restore normal. 3, also consider whether women have menopausal syndrome. 4, due to the elevation of blood sugar caused by the change can also lead to weakness and leg pain symptoms. 5, there is also, for example, the first day of work, and then rest overnight, the next day will also appear weakness, leg pain symptoms. If this happens, be sure to pay attention to your sleep and see if there are any changes in sleep. So no relief in the short term, you must go to the hospital in time to clarify the cause and choose a reasonable treatment.