There are not three major precursors to tetanus. After tetanus infection, there are no symptoms during the incubation period, and the early symptoms are muscle tightness, weakness, headache and dizziness.
Tetanus is a symptom caused by anaerobic bacterial infection, most of which occurs after trauma, localized anaerobic microenvironment is formed, there will be a period of incubation without typical symptoms.
Early on, mild stimuli, such as light, sound, drinking water, etc., may cause spasmodic attacks with increased muscle tone and a painful but conscious face.
There may be generalized discomfort, weakness, headache, dizziness, soreness and discomfort in the masticatory muscles, weakness in chewing, and localized muscle tightness.
Subsequently, there may be difficulty in opening the mouth, bitter smile face, tight teeth, neck straightness and stiffness, corns, and even face and lips bruises, respiratory difficulties, and so on.
Before tetanus infection symptoms, most have a typical history of trauma, so, after the injury to the regular hospital in a timely manner, good debridement treatment.