Solution Created when a blood vessel near the skin surface is nicked as the needle passes through. A hematoma or deep bleed is a more serious problem. Felt as a hard lump deeper under the skin, it is usually the size of a quarter or smaller. It may feel uncomfortable or slightly warm. As insulin is diverted into this pool of blood and not absorbed, the blood sugar rises.
Solution Remove the infusion set.
Check that the fluid is red like blood rather than white, yellow or green which indicates an infection. Apply warm compress, call your doctor if the blood sugar stays high. Much like a hematoma, a lump can be felt under the skin, usually associated with discomfort, warmth, and high blood sugars. Cause Can occur to anyone. Usually starts when the site preparation is poor, sterile technique is not used, or the infusion set is not changed as recommended.