More important is, what do you make of it? My experience is that these sensations can be specific to the person and the reasons aren't necessarily universal.
I would try placing my hands at other positions and see what I felt in other places. Maybe it is specific to one position and maybe not.
If it were me and based in my experience with the energy I would say that there is a greater need at this specific position for energy. If it was an all over sensation then I would assume that the entire body needed special attention.
I wouldn't presume to attempt a diagnosis based on any sensation.
Walk in beauty,
Rebecca