My sister appears to be suffering from severe anxiety. She is almost 19 and started college two weeks ago. She has been anxious in the past around the beginning of the school year, but this time seems worse. She is commuting to a community college and says she is not anxious but appears to be subconsciously suffering from anxiety. She is nauseous pretty much 24/7 and vomits daily. She also cannot keep any food down and is losing weight. It is difficult for her to complete ordinary tasks.