<s>[INST] I have constant itching and crawling skin all over my body, as well as burning eyes. I also seem to be producing thick spital in my throat and am often chesty. Anti histamines have not helped, there is no rash and blood tests have not indicated any issues. [/INST] HI, thanks for using Chat Doctor You may want to consider allergy testing to determine if there is a specific allergen that is causing your reaction. If this can be determined and your exposure reduced or eliminated then this would help reduce your symptoms. Allergy testing can be in the form of skin tests or blood tests. There are other cause of generalized itching such as infection (scabies), liver disease, thyroid disease, renal disease. Assessment would determine if any of these are present. I hope this helps </s>