In usual circumstances, when we diagnose tetanus, it is crucial to use a large amount of tetanus antitoxin and tetanus immunoglobulin early on to neutralize the toxins in the blood and alleviate the symptoms of tetanus. If tetanus severely manifests with symptoms such as muscle spasms, muscle rigidity, difficulty in opening the mouth, stiff neck, or complications like respiratory difficulty, respiratory failure, or even cessation of breathing and heartbeat, the condition can lead to severe complications and high mortality rates. Thus, tetanus becomes very severe in its late stages.