Generally speaking, receiving a tetanus shot can be painful. If there is a suspicion of infection with tetanus bacillus, it is necessary to go to the hospital to obtain tetanus antitoxin. A skin test must be performed before the injection, and the routine skin test is usually done on the inner front wall. Naturally, when the skin test needle is injected into the skin, the pain will be quite apparent. If the skin test result is negative, the tetanus antitoxin can be injected into the muscle, which may also cause pain and discomfort. If the skin test is positive, tetanus immunoglobulin, which does not require a skin test, needs to be administered. Typically, if a person has a relatively small but deep wound, particularly one caused by rusty and dirty objects, there might be a risk of infection by tetanus bacillus. In such cases, it is advisable to get the tetanus injection at the hospital as soon as possible, ideally within 12 hours.