Trying to figure out what is going on w/ my friend... He is VERY healthy normally, 44 yrs old, felt like he had a stomach bug this morn w/basic diarrhea, nauseous but no vomiting, fever, chills, weak loss of appetite...walked to kitchen to get some water and blacked out, woke up on kitchen floor in a puddle of sweat w/a bloody nose and hrt neck. Has had lower back pain for a week now as well...??