by MedExpert on November 1st, 2007

MedExpert

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What are the side effects of local anesthesia?

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  • by MedExpert on November 1st, 2007

    MedExpert

    Side effects of regional or local anesthetics vary depending on the type of anesthetic used and the way it is administered. Anyone who has unusual symptoms following the use of an anesthetic should get in touch with his or her doctor immediately.

    Paralysis after regional anesthesia, for example an epidural or spinal block, is extremely rare, but can occur. Paralysis reportedly occurs even less frequently than deaths due to general anesthesia.

    There is a small risk of developing a severe headache called a spinal headache following a spinal or epidural block. This headache is severe when the patient is upright and hardly felt when the patient lies down. Though rare, it can occur and can be treated by performing a blood patch, in which a small amount of the patient's own blood is injected into the area in the back where the anesthetic was injected. The blood clots and closes up any area that may have been leaking spinal fluid. Relief is almost immediate. Finally, blood clots or abscess can form in the back, but these are also readily treatable and so pose little risk.

    A physician should be notified immediately if any of these symptoms occur:

    • large swellings that look like hives on the skin, in the mouth, or in the throat
    • severe headache
    • blurred or double vision
    • dizziness or lightheadedness
    • drowsiness
    • confusion
    • anxiety, excitement, nervousness, or restlessness
    • convulsions (seizures)
    • feeling hot, cold, or numb
    • ringing or buzzing in the ears
    • shivering or trembling
    • sweating
    • pale skin
    • slow or irregular heartbeat
    • breathing problems
    • nusual weakness or tiredness

    Source: The Gale Group. Gale Encyclopedia of Medicine, 3rd ed.";

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