What would cause lower back pain and abdominal pain?
== == Well, unless you're dead after writing the question, it's
not an aneurysm.
A disk herniation at L4/5 can cause radiating pain both in the
anterior and posterior (front and back) parts of the body. What it
feels like is dull pain in the abdomen and groin area, with sharp
pain in the lower back.
== == Most likely is musculao-skeletal pain, BUT... If you're in
middle-late group long-time smoker, it could be an abdominal aortic
aneurysm. Otherwiase known as a dilation of the aorta in the
mid-abdominal region... If this sounds like you, get to a doctor
for evaluation ASAP...!!! He can do a CT or MRI [if physical exam
suggests one of these...]