Medically reviewed by Anju Goel, MD Key Takeaways Lockjaw happens when your jaw muscles tighten up so much that you can't open your mouth properly.Tetanus is a bacterial infection that can cause ...

Every doctor wants to see a smile on a patient’s face, but there is one that no doctor ever wants to see: risus sardonicus, sometimes known as the sardonic grin or the devil’s smile, the cruel mark of ...

Despite the wide availability of tetanus vaccines, US cases of the life-threatening disease continue to occur among people of ...

None of four US children diagnosed as having tetanus in 2024 had completed a recommended primary tetanus toxoid–containing ...