What might be causing this?
141930
Several things.  First of all, there could be, as others have stated, fluid buildup: ascites, for instance (leaking of fluid into the open area of the abdomen); there could be a collection of stool--usually that's not as large as it sounds like might be going on here--in the colon.  The bowel can wrap around itself and injure itself (volvulus) and when that happens, there can be considerable swelling, too.  Of course, there could be a mass--some benign tumors of the uterus can become immense, for instance, and there are a number of possible reasons why a cyst could form, some of which can get very large-- or other things.  Of course, there's always the reason I've got a bulging belly: I'm just plain fat.\n\nThis requires evaluation by a physician, frankly; some of the causes (especially if the abdomen has gotten markedly larger rapidly) can require emergent medical intervention...\n\nI'd recommend seeing a doc, preferably soon.
479274
it could be a migrane or a headache... but if this is uncommon for you it could be the sign of something more serious
1019086
it may be a medical prob. check with your family physician.
912060
Stress usually causes these things!!\nget some Zovorax!!!
895476
Go ask your doctor. I am not a medical professional but you want to find out what is causing this. It could be anemia or some other thing with the blood. Good luck!
580815
It could be a number of things. It could be a virus. Or has he perhaps been taking any medications in which this might be a side effect? \nWhatever it is, since it has been going on for over two weeks, he definitely needs to consult a physician.
789581
likely trauma or no reason, i would see a doctor if the symptoms persist or worsen, good luck
954253
Could be hardware or software, Does it happen more often after your computer has been running for a while or just randomly? Is there anything that you do that makes it more likely to occur?
286221
It could be your heart. I would see a doctor to sort it out.
398153
These things may or may not be related. However more information is required to determin what is going on. Some common things could be, stress, heart burn, hypothyordism.. but i sugest you start by seeing your doctor.
1056327
a pinched nerve perhaps?
912792
Could be a sinus infection or an allergy.
670814
It's a good possibility. Go get it checked out just to make sure. Good luck!
1084221
it could be an allergic reaction but it could also be some sort of infection...ask a doctor
282970
Possibility of an infection. Call your doctor and have it checked out.
859249
There might be a medical reason for it, so see a doctor to be safe.
30861
Could be a whole laundry list of reasons why this might be happening from your blood sugar being too low, not following a balanced diet, to something more serious.  Best bet would be making an appointment with a Health care professional that can properly answer this question for you.