I have pulsing sensatiion, almost like a twitch in my lower legs. It seems worse at night or rest. I can sleep. Sometimes I can feel the pulse on the outside with my hand. It seems to move around on my calves. No set pattern. I am a healthly 63 year old female, fit, good diet, no health problems. It appears to be getting more frequent. especially in the past few days. I am no no meds. I have had a problem with cramps in my arches but that appears to be resolves with massage and orthotics. I did look up formication but I have no pain, just this weird feeling not a crawling feeling just a spontaneous pulsing. Could it be fasiculations?