<s>[INST] I have been sick all day, with stomach issues that include vomiting. I also have muscle aches in my back and legs. What I am more concerned with is that my hands and forearms are tingling and stiffeningup, making it difficult to use them. What might be causing this, and how can I address it? [/INST] Hello Thank you for trusting HCM Dear since when you're suffering from this problem?? Are you male or female?? What is the reason for vomiting?? Most possible causes are simple viral fever with myalgia, other possibilities like fibromyalgia, severe anemia, rheumatoid arthritis, chronic fatigue syndrome, calcium vit - d deficiency, polymayalgia, hypothyroidism, pcod  etc.. Use tab ultracet twice a day for 5days. Dear you need to consult rheumatologist, he will examine and treat you accordingly. </s>