What is the medical term for a bruise that occurs from a blood draw?

The medical term for a bruise that occurs from a blood draw is hematoma. When blood is drawn, it can sometimes lead to blood leaking out of the blood vessel and pooling in the surrounding tissue, which forms a hematoma. This localized collection of blood outside of blood vessels can cause swelling and discoloration in the affected area, resembling a bruise.

While ecchymosis is also a term for discoloration due to bleeding under the skin, it is more general and does not necessarily imply a localized pooling of blood like a hematoma does. Contusion is another term for bruise but, similar to ecchymosis, it does not specifically refer to the localized collection of blood characteristic of a hematoma. Edema refers to swelling caused by fluid accumulation, which is different from the blood-related issue that a hematoma represents. Thus, hematoma is the most precise term used in the context of blood draws leading to bruising.