What is cause for intense itching in lower legs when sitting or lying down,no rash,no any skin issues,itchy deep inside,maybe nerves?stops when i move

Possible xerosis: Xerosis is dry skin, which increases to a sometimes violent itching, due to small cracks (invisible) in the outer layer (epidermis). Try this: bathe legs less frequently; use very mild soap, like DOVE, if available; apply bath oil to your wet l Skin before drying lightly, but step out of tub first; apply a THIN layer of Solid Crisco shortening to legs at night, or a good moisturizer. Don’t slip!