Side affects of tetanus shot are usually minor, Mostly soreness, redness, swelling at the site of injection. This can appear few hours after injection, but mostly go away in a day or two.
More serious side effects are serious allergic reactions or deep, aching pain and muscle wasting in the upper arms. These symptoms require immediate medical help. Symptoms may start few days after the shot and continue for months, that is why urgent medical attention is needed.
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It is not meant to substitute for medical advice provided by your physician or other medical professional.
If you have or suspect that you have a medical problem, promptly contact your physician or health care provider.