<prompt> Prodormal symptom complex of tetanus consists of -RestlessnessHeadacheMasseter muscle spasmAll the above  <response>: Ans. is d i.e., All the above Tetanus Tetanus lock jaw is caused by exotoxin produced by Clostridium tetani. After an incubation perod of 2 days to several weeks, a prodromal symptom complex of restlessness, headache, masseter muscle stiffness and muscle contractionsin the area of wound evolves. Violent tonic generalized muscle spasms generally follow in 24 hours, culminating in acute respiratory arrest. 