<s>[INST] I am not certain what is going on other then the stress that I am under has been causing me to get very few hours of sleep.  I am shaky most of the day, slight but constant headache, nausea, sweating, feeling of confusion, heart palpitations.  I can not focus on work.  I seem to have a problem understanding what is being asked of me and being clear in my responses to others.  I must be crazy!!! [/INST] Hello and Welcome to ‘Ask A Doctor’ service.I have reviewed your query and here is my advice.All the given symptoms could be suggestive of functional disorders it means it is the psychological condition, like anxiety and depression, and it is not the pathological condition, although it is also a kind of illness. Initially person can come out of this without the help of medicines and for that controlling the thought, become practical, positive attitude, exercise, enough of sleep, changing life style, having balance diet, avoiding junk food, alcohol and smoking. These are the ways that could pull person out of stress; else one has to see the psychiatrist.I hope I have answered your query. Let me know if you have any further questions. Regards,Dr. Akhtarhusain </s>