<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, Ive been experiencing lower body pain and my foottoe feels stiff or tight. Any idea what it might be?  <response>: Based on what youre telling me, it sounds like you might have scoliosis. Scoliosis can cause lower body pain and stiffness in the extremities due to the spines abnormal curvature. 