Tetanus is an infection caused by Clostridium tetani, which enters the body through broken skin or mucous membranes and thrives in an anaerobic environment, producing toxins. Clinically, tetanus is characterized by lockjaw, episodic spasms, and rigid spasms, primarily affecting the muscles such as the masseter, latissimus dorsi, abdominal muscles, and limb muscles. Early symptoms of tetanus infection include general weakness, dizziness, headache, weak chewing, localized muscle tightness, pulling pain, and heightened reflexes.