Lidocaine ointment is one of the most commonly prescribed topical pain medications. It is used to temporarily relieve minor aches and pains of muscles and joints associated with arthritis, back aches and strains, sprains and bruises. It works by blocking sodium channels in nerve fibers, preventing the conduction of pain signals to the brain. In this article, we discuss the various uses, risks and precautions involved with lidocaine ointment.
Uses of Lidocaine Ointment
Lidocaine ointment has many uses when applied to the skin:
Minor Muscle and Joint Pain Relief
Lidocaine ointment is very effective in temporarily relieving minor muscle and joint pains associated with conditions like arthritis, strains, sprains and bruises. When applied topically, it penetrates the skin and blocks pain signals from affected areas for a few hours.
Shingles Pain Relief
Lidocaine ointment can provide effective relief from the burning, stabbing pain caused by shingles. Applying it to shingles rashes several times a day helps reduce pain and improves quality of life.
Postherpetic Neuralgia
Postherpetic neuralgia is a painful condition caused by nerve damage from shingles. Lidocaine ointment applied regularly to areas affected by postherpetic neuralgia can reduce severity of pain.
Minor Procedural Pain Relief
Doctors often prescribe lidocaine ointment to provide topical anesthesia before minor medical procedures like injections, venipuncture, cannula insertion etc. It numbs surface nerves and makes procedures relatively painless.
Risks and Precautions of Lidocaine Ointment
While lidocaine ointment is generally very safe when used as directed, certain risks and precautions must be considered:
Allergic Reactions
Like any other medication, lidocaine can potentially cause allergic reactions in some individuals. Signs of allergy include rashes, itching, swelling or breathlessness. Discontinue use if any reactions occur.
Accidental Ingestion
Lidocaine ointment is for external use only on the skin. Accidental swallowing or ingestion, especially in children, may cause nausea, vomiting or numbness of mouth and throat. It should be stored away from children’s reach.
Overuse and Overdosage
Prolonged or excessive use of lidocaine ointment can potentially lead to an overdose characterized by symptoms like dizziness, blurred vision, seizures, slowed breathing etc. It is important not to use more than recommended serving sizes and frequency.
Application Near Mucus Membranes
Lidocaine should not be applied near or inside mouth, eyes or other mucus membranes as it may cause irritation. Similarly, avoid contact with broken skin or open wounds.
Drug Interactions
Some drug interactions are possible when using lidocaine ointment along with certain medications that also affect sodium channels. Discuss use with doctor if on medications like class 1 antiarrhythmics.
Monitoring for Side Effects
When starting lidocaine ointment, apply a small test dose to check for any adverse reaction first. Monitor skin for redness or irritation. Discontinue use if rash or other side effects develop. Seek medical advice as needed.
Conclusion
In summary, lidocaine ointment is a very effective and safe topical analgesic when used as directed for recommended conditions and periods. However, minor risks and precautions must be taken into account, especially in cases of allergy, overuse or accidental ingestion. Inform your doctor about any medical conditions or medications you may be on before using lidocaine ointment. With proper application technique and monitoring, it can offer reliable relief from minor muscle and joint pains.