I have severe pain in the left groin/testicle, all the way around to my lower back. It is unbearable when I consume caffiene. Heat or ice sometimes alleviates the pain. What could this be?
There are lots of things that can cause this; inflammation/infection, prostate problems, hernia, back problems, kidney stones, etc. You'll have to see a doctor to find out what's going on. You might want to try the Check a Symptom box on the upper hand side of the Health Central pages; that will walk you through the different possibilities. Any time you have severe pain like this, it's a good idea to have a doctor check it out as soon as possible. Good luck!
Here are some links that might be helpful in the meantime:
Testicle Ultrasound Overview
Natural Ways to Improve Prostate Health
Cort is right - there can be many causes. But I just went through the exact same symptoms and the cause of mine is a 7mm kidney stone. Something that big won't pass on its own. See a doctor!!!