Answer:
Phlebitis
Step-by-step explanation:
Extravasation refers to the leaking of a fluid from a blood vessel of a container.
Infiltration refers to the accumulation of a substance in quantities above the normal.
Hematoma is basically a bruise in the skin .
Phlebitis refers to the inflammation of a vein, its symptoms are pain and redness along the vein. Usually the spot where the inflammation is tends to be warmth. There are palpable cords along the course of the vein that can be a sign of a superficial clot or superficial thrombophlebitis.
The symptoms of this patient are consistent with phlebitis due to the infusion.