Lidocaine spray is a topical anesthetic that provides localized relief from temporary pain and discomfort. Available in both over-the-counter and prescription forms, it functions as a numbing agent for various minor ailments.
How Lidocaine Spray Works
Lidocaine works by temporarily blocking nerve signals in the specific area where it is applied. This action prevents pain messages from traveling along nerve pathways to the brain. The medication targets sodium ion channels on nerve cell membranes, inhibiting electrical impulses necessary for signal transmission. This provides localized relief without affecting the entire body’s sensation or consciousness.
Primary Uses of Lidocaine Spray
Lidocaine spray offers a versatile solution for managing localized pain and discomfort. It is frequently used for minor skin irritations like small cuts, scrapes, and burns, including sunburn. The spray quickly numbs the affected area, providing relief from pain and itching.
For insect bites and stings, lidocaine spray reduces associated pain and itching. Some formulations are designed for sore throats, providing targeted numbing for conditions like pharyngitis or laryngitis, and can also help with discomfort from canker sores or gum irritation.
Lidocaine spray is also employed for pain relief associated with hemorrhoids, rapidly numbing itching, burning, and pain. Its no-touch application is beneficial for sensitive areas. Furthermore, it is used to numb the skin before minor medical procedures such as injections, IV insertions, or cosmetic applications like tattoos and piercings. For muscle aches and joint pain, some lidocaine sprays provide targeted relief.
Safe Use and Important Considerations
Using lidocaine spray safely requires adherence to specific guidelines. Before application, clean and dry the affected skin area. When using the spray, hold the canister several inches (typically 3 to 6 inches) away and spray until wet. Avoid spraying directly into the eyes, nose, or mouth; if applying to the face, spray onto a hand first and then gently apply.
Use the lowest effective dose and never exceed the recommended frequency or amount. Overuse can lead to increased absorption into the bloodstream, potentially causing systemic effects. Common mild side effects may include temporary stinging, redness, or irritation at the application site.
More serious side effects are rare but require immediate medical attention. These can include dizziness, drowsiness, confusion, unusual tiredness, ringing in the ears, blurred or double vision, shaking, or seizures. Allergic reactions, though uncommon, can manifest as a rash, itching, swelling (especially of the face, tongue, or throat), or difficulty breathing. Lidocaine should not be used on large areas of the body, on broken or irritated skin unless directed by a healthcare professional, or on puncture wounds. Individuals with pre-existing conditions such as heart or liver issues, or those who are pregnant or breastfeeding, should consult a healthcare professional before use. If symptoms persist or worsen, medical advice should be sought.