history: 6 weeks ago, concussion & temporal skull fracture. medication: lisinopril hct (high blood pressure) Recently, in the last 1-2 weeks, I ve been experiencing mild cramps in my legs, arms, and chest that don t follow strenuous activity. They seem to appear out of nowhere. In the last few days, I ve started having intense, shooting pains, in the muscles near the lateral end of both clavicles. Any ideas as to what could be going on? Cause for concern, or should I just wait this out?