<s>[INST] i have been having a sensation in my foot and lower leg that started few weeks ago. it started in my foot near my ankle and felt like the blood pulsing. now i feel that same feeling in my lower leg its almost like a fluttering,pulse. no pain no swelling. also occasional sensations of heat in that leg [/INST] I would suggest being seen by a vascular surgeon. the first thing that needs to be ruled out is a deep vein thrombosis- which is a clot- though from your description seems unlikely as there is no pain or swelling. If vascular etiologies are ruled out, then consider tarsal tunnel syndrome which often can mimic vascular sensations by affecting the nerve. You should also see a foot and ankle specialist for confirmation. </s>