Individual nerve fibers may also be examined. The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experience, and level of trust. How the test will feel Because a local anesthetic is used, discomfort during the procedure is usually minimal. The anesthetic may burn or sting when first injected. After the procedure, the area may feel tender or sore for a few days.
Nerve biopsy is invasive and is useful only in certain circumstances.
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