what could be causing severe pain in my left thigh?
367708
this could be caused by wearing tight low cut jeans that can put pressure on a nerve on your hips. this called meralgia paresthetica. or it could be sciatica, a pain associated with your sciatic nerve that runs along the thigh.
1088250
could be the result of a new exercise routine.  you have muscles between your ribs that could be just sore from deep inhalation or new movements.  that would coincide with your legs hurting.  but i cant think of any medical conditions that would cause both of these symptoms.
875517
i am not a male but i am not sure what side your appendex is on i think its left but anyway have you been drinking alot of sodas or coffe sometimes this can cause the same kind of pain symptons as an appendix...but be safe and call hospitable
164608
It might be possible in rare instances but much more likely to be a pulled muscle.  In either case there really is nothing much that can be done.  You can wrap an elastic bandage around the area & it may help a little, it won't completely stop the pain.  Time will take care of it.  I've had both more than once and have been told this by my doctor.
1179113
The only thing I can think of is a heel spur.  They can occur on the bottom of the feet as well as the back and side.  I think an MRI is your best bet.  I had major foot problems in my left foot for 4 years and took care of it over a year ago.  Don't let it go too long.  You depend on your feet to get you from point A to point B.  GOOD LUCK!!
929805
This could be an ileopsoas muscle strain or, as you suspect, a bursitis.  And the pain can indeed come and go.  It is possible for it to become a chronic condition when not rested /treated appropriately.\n\nBut! laying on a mattress, however 'terrible', is not likely to cause this injury.  (Though it may aggravate it, so wrecking your quality of sleep and rest....).\n\nIt takes time for a bursitis to form - and it is not at all unusual for \none to develop weeks, even months,after the original injury.\n(Which is why it sometimes seems to come 'out of the blue')\n It is a common sports injury, but may also be connected to excessive weight-bearing. or other forms of trauma.  (I see from a previous answer that you are just 27 yrs old...? sports injury)...\n\nPrimary care doctors are not good at diagnosing these kinds of problems - indeed they don't really want to, since the diagnostic tests involved are expensive (CT and MRI imaging) - and, when all is said and done, none of their patients ever die of pain!!\n\nMoreover,while patients are waiting for those tests, the problem frequently resolves itself.  \n\nTreatment is image-guided deep injection of steroids,but the success rate for this is only 50-60%.  (Surgery for very extreme cases).\n\nAn alternative diagnosis might actually be spinal problems - a herniated disk in particular - which can cause 'referred' pain to the hip and other structures.  However I would be willing to bet money that you have a bursitis - primarily because you identify the pelvic bone as a major pain site. (The ileopsoas muscle attaches to the pelvis).\n\nIn this condition, you are likely to feel OK when mobilising - but experience pain when you sit/ lay in a 'fixed' position.  You may also experience pain on internal rotation of the leg on the affected side.\n\nYou need 'Brufen' (Ibruprofen) for pain relief and as an anti-inflammatory.  And you need to rest for a bit with only gentle exercise.  \n\nIf you have a continued experience of pain - over several months - you will need to seek a definitive MRI scan of the pelvis - primarily to exclude spinal radiculopathy (nerve root involvement) and lumbar disk problems. But lets hope you won't need one and that it is a minor problem.  Its a 'wait and see', really.\n\nI really hope this helps you. Good luck.
431721
Please get to a doctor or better still A & E, this could indicate a blocked artery or gout in the leg.\nThis must be checked out and not left
326352
Could be a cyst or a tear in the muscle. Probably a good idea to see an orthopedic doctor.
813067
You really need to go to a doctor to have this checked out. There are a number of things that could cause pain in that area. Some being serious and some not so serious. Make a doctors appointment and if it gets worse you need to get yourself to an E.R. I hope you feel better soon!
1038836
It could be a hernia or something like that. Or it could just be muscle pain. I would see your doctor to make sure that there is nothing serious going on.
485775
Please see your doctor AS SOON AS POSSIBLE.\n\nThough you have diabetes I think the pain of the leg cannot be ignored by taking a pill or putting some balm.\n\nSee the doctor soon. You can see yahoo answers later. Hurry up.
987770
Dehydration is ofthen the the cause of severe leg pain. Perhaps the drug you are taking is a diuretc? Diuretics alleviate the symptoms of these diseases by causing sodium and water loss through the urine.
867447
If you are in that severe of pain, you should seek immediate medical advice, it could be something else.  I've also had UTI, but never had that bad of pain associated with it.  Go the the ER!
965829
IANAD, but according to the Mayo Clinic's site:\n\n"Pain here [in the lower left abdomen] most often suggests a problem in the lower colon, where food waste is expelled. Possible causes include inflammatory bowel disease or an infection in the colon known as diverticulitis."\n\nBut here's hoping it's something more minor than that =)
978641
a friend of mine had severe left side pains and it turned out to be pneumonia of the heart. with it was difficulty breathing. it was the same symptoms of a stroke. call 911
635753
Pain that is caused by another part of your body having a problem that is felt somewhere else.\n\nExample... pain in the back of your leg can actually be orginating from your low back or hip.
209867
Eating more foods with potassium would help, like fruits, bananas, grapes, apples, or broccoli...\nOtherwise, go see a doctor and get some x-rays, maybe you have a pinched nerve or a split bone or torn muscle...\nSomething like that would create off and on pain...