Since last 3 days I am getting random sudden electric shock type tingling pain/sensation in my right buttock muscles (at the centre). This last for a second or a fraction of second with a tingling sensation troughout my right leg afterwards. On the first day I had experienced such shock for 3-4 times, yesterady 5-6 times and today till 1.00 noon already 6 times it has happened. It comes suddenly and randomly and mostly while I am sitting in my office/residence/driving a car. While walking too I have experaince such shock pains but with limited number of times. Never experainced this while am asleep