Hi i have itchy skin all over my body including head, no rash. no new products being used?

Well : Well this could be an internal problem like a liver disease or kidney disease or diabetes or parasites or a problem with your blood chemistry or even parasites.you can develop a rash from a product you've used for a long time like laundry soap shampoo soap's perfumes lotions. Recommend Healthtap visit or primary care doctor visit for specific diagnosis and treatment