From those indices, it's hard to make an educated guess. Kidney problems are a possibility but if there's no history of kidney problems, that too is unlikely. Doesn't sound like a cardio problem. One possibility is depletion of electrolytes (coupled with dehydration?) from the diarrhea causing unusual muscle cramping?
== == 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.
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== == 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...]
Lower Back pain and abdominal pain with liquid diarrhea could be caused by early stage ovarian cancer; also parasitic infection.
A bad taco
this is not answer still seeking answermany but drug withdraw can cause this.
shoes that are to small for you because they will smash your toe and it will cause Back pain
Yes, Accutane can cause back pain. Back pain (and joint pain) are a common side effect of taking Accutane.
Pain in the stomach could be gas pain, and diarrhea at night could be just the flew. I would consult a docter.
I am personally suffering from diarrhea/major pain because I ate half a bag of cherries yesterday. Don't do it. It's not worth the pain.
Watermelon can cause diarrhea (and/or abdominal pain and bloating), if you have an intolerance or allergy to watermelon.
quadratus lumbar
No. That would not be typical symptoms of a cold.
Neck
Can too much iron cause cause low back pain
There are many causes of gas and diarrhea, but the right shoulder pain is most likely "referred pain" due to the stomach distress. The phrenic nerve is involved... I've also had right shoulder pain after my c-section, and the doctor explained how it was due to the phrenic nerve getting irritated and extending the pain to the right shoulder.
I believe that shingles can cause lower back pain.