For tetanus shot skin allergy symptoms, they generally include redness, swelling, and itching of the skin. Severe cases can cause an increase in body temperature. Therefore, if an allergy occurs, caution is needed, and desensitization treatment may be necessary. It's important to rest normally. Tetanus vaccine is mainly a medication used to prevent tetanus infection. Thus, after an injury, it is necessary to get the shot. Also, take care to rest, avoid spicy and stimulating foods as well as those high in hormone levels, adjust your mindset, change dressings regularly, and have regular check-ups.