Experiencing muscle cramps in jaw, upper arms and legs (both sides) for 6 days with no relief - what could this be, what tests should my dr run?

Causes are overuse: of a muscle, muscle strain or simply holding a position for a prolonged period, dehydration. There may be associated inadequate blood supply, nerve compression, or mineral (potassium, calcium, magnesium) deficiency. Tests might include electrolytes (sodium, potassium, etc), calcium/magnesium levels, iron levels, CK muscle enzyme, aldolase, ALT/AST, thyroid function. Rarely, an EMG (electromyogram)