A rhythmic pulsation. This sort of rhythmic pulsation is a symptom of an aneurysm located in the abdominal aorta. A small aneurysm in this region will be all but unnoticeable and can be completely symptomless. However, as an aneurysm grows larger, the patient will feel a rhythmic pulsation in the region of an aneurysm. If an aneurysm is ruptured, this will be very noticeable, but even an unruptured aneurysm of the abdominal aorta can be located by touch, though it may otherwise be quite unnoticeable.
Unexplained pains in the back of the chest. If your chest suddenly beings to ache, and if you find this pain spreading into your back, this could be a symptom of an aneurysm of the abdominal aorta. You should be especially alert as an aneurysm of the aorta in the abdomen can cause quite a range of symptoms. Any strange sensation in this region, or a rhythmic feeling, should be taken extremely seriously.
Unexplained pains in the jaw, or below that, in the neck, or in the back. An aneurysm of the aorta that occurs in the upper chest is called a thoracic aneurysm. When an aneurysm is small there will be very few symptoms, but as it grows larger, you will experience not only pain but also sometimes a hoarse throat, difficulty breathing or swallowing, or a tendency to cough. One symptom that is rarer than these is a sort of tingling sensation or even a pain in the center of the upper back.