There are different prices around the world. Here are some from January 2014. Russia: US$128 a ton. Boston, USA: US$1.11 a pound. Bangladesh: US$0.45 a kg. See the link below.
Allergic reaction causes sneezing, runny nose and hives and can lead to anaphylaxis, a whole body reaction. Anemia, a lack of red blood cells, can cause fatigue, pale skin, weakness, dizziness, headache and more. Aseptic meningitis, or viral meningitis, can cause fever, headaches, neck pain, nausea, and more. Aseptic meningitis, or viral meningitis, can cause fever, headaches, neck pain, nausea, and more.
Vertigo or motion sickness: Dizziness related to motion sickness or dizziness related to problems in your inner ear that feel exactly like motion sickness are major causes of nausea. Indeed, this is probably the most treatable cause of nausea. There's a reason that nausea and nautical have the same root word.