My mom is 42 years old and she is having very weak pulse and low blood pressure. She is having fever around 99 to 100 daily for 20 days. If she goes on a walk then also fever starts. If she drinks water then she vomits and is feeling anxiety. She is feeling needles in her feet and hands. This problem has also happened to her a year ago and some times very rarely she get mild. Please suggest me the remedies and i want to know that are its causes.