The earliest sign is often shoulders and an upper back that feel tight no matter how much you stretch. From there the pattern can bring pain into the neck, mid back, lower back, hips, and even along the sciatic nerve, along with numbness or tingling into the arms and hands as nerves come under pressure.
Two things surprise people most. The first is tenderness at the front of the chest where the upper ribs attach to the breastbone, a companion pattern our doctors see often in patients who have carried a hump a long time. The second is breathing that has quietly become shallow, because a rounded upper back limits how freely the rib cage can move. The upper spine also relates neurologically to the heart, lungs, and thyroid, which is part of why a pronounced hump deserves real attention rather than just a cosmetic fix.