Clostridium tetani infection of the body and its toxin affects central nervous system.
Symptoms: muscle spasms that can be painful, temperature,"curved" position excessive sweating.
The patient may be unable to open his mouth.
Facial muscles contract, creating a mimic like a forced laugh.
Whenever there is an open wound, or a sting by nail, etc., which was in contact with the ground or shows rust, patient should be vaccinated against tetanus that day