1. Medinfo: Low back pain
Coughing or sneezing can often make the pain much worse. Low back pain is pain affecting the lower part of the back. Low back pain means a pain or ache somewhere between the bottom of the ribs, at the back, and the top of the legs.
http://www.medinfo.co.uk/conditions/lowbackpain.html

2. Back pain: Causes, Treatment & Risks >> Medical Questions, Weight Loss, Pregnancy, Drugs, Health ...
Some simple coughing or sneezing can often make the pain much worse. Low back pain is pain affecting the lower part of the back. Low back pain means a pain located somewhere between the bottom of the ribs, at the back, and the top of the legs.
http://www.steadyhealth.com/software/vitamin_test/articles/Back_pain__Causes__T...

3. eCommunity.com: Nervous System Disorders : Lumbar Disc Disease (Herniated Disc)
Trauma may also cause an already herniated disc to worsen. The vertebral column, also called the backbone, is made up of 33 vertebrae that are separated by spongy disks and classified into four distinct areas.
http://www.ecommunity.com/health/index.aspx?pageid=P00783