Hello, from few days I am having sensations like chills or vibrations randomly anywhere in various body parts like head, hand, leg, close to breast, etc. This happens for just like a second but sometimes multiple times in a day. Also it happens only in one body part at a time and that too randomly like sometimes at top of head, sometimes on back of head, close to breast, above elbow and also randomly either on right or left side of body. Is it something to worry about or will just pass in few days? Also what does the cause look like? Any medication I should take? I have as such no medical history, have no other issues.