Hi. For The Past Week I Have Been Experiencing A

Hi. For the past week I have been experiencing a "warm flush" that occurs randomly (while sitting or standing) on my left calf Same area/ location on the calf each time. In the past day I have experienced a similar feeling on the back of the left thigh. (ie. moving up my leg). There is no pain, tingling or any other symptom associated with the experience and it happens multiple times a day. The leg area affected does not feel warm to the touch at the time it is happening. Is there anything to be concerned about? I a 57 male and in good general health. Thank you