Period of onset in tetanus refers to the time between
The interval between first symptom(dysphagia and stiffiness of jaw) to a reflex spasm is called period of onset. If this is less than 48hours,the prognosis is poor and if more than 48hours,prognosis is better. Ref:Manipal manual of surgery,4th edition,pg
First injury to spasm
First symptom to spasm
First spasm to death
Trismus to laryngeal spasm
General surgery