What are typical side effects of local anesthetics?

Local anesthetics are designed to block nerve signals in a specific area, leading to temporary numbness and loss of sensation. The typical side effects associated with local anesthetics often include numbness and tingling around the area of administration, as these effects are direct consequences of the anesthetic's function. Lightheadedness can occur due to the systemic absorption of the anesthetic into the bloodstream, which may affect the central nervous system and lead to transient feelings of dizziness or faintness.

Nausea, vomiting, and diarrhea are generally associated with other medical conditions or complications but are not characteristic responses to local anesthetics. Similarly, headaches, fever, and chills are more indicative of systemic issues rather than local anesthetic use. Drowsiness, confusion, and muscle weakness might be observed if there's a significant systemic impact or overdose of anesthetic, but the primary and more common side effects are those related to the localized effects on the nervous system—numbness, tingling, and lightheadedness following application.