Hello Doctor, Experiencing different type of pain in lower back, belt area which goes in legs also especially calves. It's like sensation in pain (jhanjhanahat). Increase on sitting and lying down and less on standing or walking. Had 1 Etova 400 each at night from past 2 days to relieve from pain n I could sleep after that otherwise not bearable.. I can feel it's not mascular pain..it's exactly starts from the sides where we keep our hands for exercise n all.. Please advise what it can be and how to treat it. Thank you.