What can I do about my tense neck?

What can cause severe neck pain, headache, blurred vision and more...?

• My sister who is 17 has had symptoms since last week..It started last Saturday, with a sore throat, then blurred vision the next day, the next day headache, light and sound sensitivity, then severe neck pain which caused her not to be able to move her neck without it hurting. She has extreme fatigue, muscle aches, loss of appetite, chills on and off, and feeling like she wanted to vomit, but hasn't. We took her took to the ER on Weds, they checked her from head to toe, and didn't think it was anything serious thank God. She was given a "headache cocktail" which included a strong pain reliever and an allergy type of medicine given all through an IV. The symptoms caused her to miss school for 2 days. She was getting better till this morning, having severe diarrhea since this morning, it is now 10:30pm, and she seems to be losing a lot of fluid due to the diarrhea which is now clear discolored liquid . And she has blood in her stool now, along with an enlarged abdomen, abdominal cramps, and gas. She still has her other symptoms which are not as bad now. About two years ago she had this same problem with the extreme neck pain, headache, and muscle pain, we took her to the ER that time and they did a spinal tap which was negative thank God. What can cause all these problems? The stool symptoms seem like a bacterial or viral infection/flu not sure about it all. Any ideas?!? We're going to take her back to the ER maybe tomorrow, to see if things get better. Thanks for any ideas!

• Answer:

  Problems with interspinal discks in the neck section can be the reason. Why havent they taken MRI and CT test? MRIs and CTs for head and neck are usually compulsory for cases of headacheas. She must be given a diagnosis, in the first place. Afterwards treatment must follow