Early in the course of the disease, osteoporosis may cause no symptoms. Later, it may cause height loss or dull pain in the bones or muscles, particularly low back pain or neck pain.
Later in the course of the disease, sharp pains may come on suddenly. The pain may not radiate (spread to other areas); it may be made worse by activity that puts weight on the area, may be accompanied by tenderness, and generally begins to subside in one week. Pain may linger more than three months.
People with osteoporosis may not even recall a fall or other trauma that might cause a broken bone, such as in the spine or foot. Spinal compression fractures may result in loss of height with a stooped posture (called a dowager's hump).