What are common complications associated with local anesthesia?

Local anesthesia can lead to several complications, and the identified answer accurately reflects some of the most common ones.

Hematoma can occur when there is bleeding into the tissue from blood vessels that have been punctured during the anesthesia administration. This is particularly relevant in certain injections where the anesthetic is administered near major blood vessels.

Nerve injury is a potential risk as well, especially when injections are not placed accurately. This can lead to temporary or permanent numbness, tingling, or weakness in the area served by the affected nerve.

Allergic reactions are also a significant concern. While they are relatively uncommon, they can occur with any medication, including local anesthetics, ranging from mild skin reactions to more severe anaphylactic responses.

The other options presented include complications that are either less directly tied to local anesthesia or are more common with systemic anesthetics or in broader medical contexts rather than the specific situation of local anesthesia. For instance, while cardiovascular problems can arise from systemic absorption of local anesthetics, they are less frequent compared to the more localized issues noted, such as hematomas and nerve injuries.