I've had lymphoedema in my legs for 7 years now. In the last year or so I've found that occasionally I get a very sharp stinging feeling on the backs of my legs - it's very much like walking through stinging nettles. When it first happened I thought an insect was biting me but my legs looked completely normal, plus I'm getting it now in the winter. Has anyone else had this? Is there anything I can do to relieve it?