I am having a similar situation and no one knows that it is. I had one in my calf, now this morning I woke up with dents under both knees that literally were not there yesterday. I have had tingling, numbness, pins and needles in mostly my left calf. I did an EMG, and it was normal, but the orthopedic said the neurologist did not test the muscle of interest. I can't get an appointment until a week from now and I am kind of freaked out. Some of the pictures on this thread look similar to what I have, so I thought I would see if anyone was able to get an answer on what these are? Much appreciated!