A physical exam may also show:Broken blood vessels in the eyes (from the strain of vomiting)Dry mouthPouch-like look to the cheeks Rashes and pimplesSmall cuts and calluses across the tops of the finger joints from forcing oneself to vomitBlood tests may show an electrolyte imbalance (such as hypokalemia) or dehydration.ElectrolyteElectrolytes are minerals in your blood and other body fluids that