Hi, I am Dr.Bruno. I have read your question and understand your concerns. Let me try to help you Question : What does abnormal curvature of spine mean? Answer : There is a normal Curvature of Spine. The Spine at your neck is curved with the convexity toward front. In the region of your rib cage, the spine is curved, but the convexity is toward back. Again in the region of your Lower abdomen, the spine is curved, but the convexity is towards front Now, There are certain diseases in which these normal curvatures are lost or exaggerated. Those are called Abnormal curvatures. These are called Kyphosis or Exaggerated Lordosis or Loss of Lordosis Some times, the spine gets curved towards right or left . These are called Scoliosis If you could tell me what the following question is asking for, I d greatly appreciate it: Have you ever had or do you now have: Abnormal curvature of your spine (any part)? The above question is asking : Have you had Scoliosis, Kyphosis, Loss of Lordosis or Exaggerated Lordosis Hope you found the answer helpful. If you need any clarification / have doubts / have additional questions / have follow up questions, then please do not hesitate in asking again. I will be happy to answer your questions. Let me know if I can assist you further. Take care.