Electrocardiography (ECG) may show whether the elevated potassium levels are affecting the conduction system of the heart, as suggested by the presence of T wave changes or broadening of the QRS complex. Low calcium levels may be present in the initial stage due to binding of free calcium to damaged muscle cells.As detectable levels of myoglobinemia and myoglobinuria occur, blood tests and urine tests may show elevated levels of myoglobin. For example, a urine test strip may reveal a positive result for "blood", even though no red blood cells can be identified on microscopy of the urine; this occurs because the reagent on the test strip reacts with myoglobin. The same phenomenon may happen in conditions that lead to hemolysis, the destruction of red blood cells; in hemolysis the blood serum is also visibly discolored, while in rhabdomyolysis it is normal. If kidney damage has occurred, microscopy of the urine also reveals urinary casts that appear pigmented and granular. Complications
Compartment syndrome is a clinical diagnosis, i.e., no diagnostic test conclusively proves its presence or absence, but direct measurement of the pressure in a fascial compartment, and the difference between this pressure and the blood pressure, may be used to assess its severity.
Contact stomatitis is inflammation or pain of the oral mucosa caused by external stimuli. It is characterized by cutaneous lesions that may be located where the offending agent contacts the mucosa for a prolonged time. Oftentimes it presents in the mouth after contact with hot food or from ill-fitted dentures or other irritant. Consequently, patients may seek resolve from their dentist rather than a dermatologist. Unlike with allergic contact stomatitis, the skin requires no previous exposure to a stimulant before crafting an immune reaction. See also
Contact urticaria
List of cutaneous conditions


== References ==