Not in right dose: Local anesthesia is injected to cause numbness in a small area of the body, such as around a tooth before dental work. In proper doses, it causes no side effects at all. Sometimes lidocaine, one type of local anesthetic, is given directly into a vein to treat abnormal heart rhythms. This can cause brief side effects such as ringing in the ears or drowsiness, but these go away quickly.
Answered 10/2/2012
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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