Tetanus can start from an injury such as a scratch, a cut or a bite from an animal or another person. The organism particularly lives in soil or fecal matter. It may take anywhere between one day to three weeks for symptoms to develop. Some affected people may experience only pain and tingling at the wound site and some spasms in muscles near the injury site to start with. As things progress, there can be stiffness of the jaw (called lockjaw) and neck muscles, irritability, and difficulty swallowing. There may be spasms in the facial muscles causing a strained smile appearance called risus sardonicus. The swallowing muscles can be affected causing food to stick or come back. If muscle spasms develop early -- within five days -- the chances of recovery are poor.
It is seldom possible to find either the bacterium or the toxin in a suspected tetanus patient, so diagnosis can be made only on the basis of clinical observations combined with an individual’s history of tetanus immunization.
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If tetanus does develop, seek hospital treatment immediately. This includes wound care, a course of antibiotics, and an injection of tetanus antitoxin. You may receive medications such as chlorpromazine or diazepam to control muscle spasms, or a short-acting barbiturate for sedation. You may require the aid of an artificial respirator or other life-support measures during the several weeks needed for the disease to run its course.
CDC: "Tetanus (Lockjaw) Vaccination."
National Network For Immunization Information: "Diphtheria, Tetanus, Pertussis (DTaP)."
National Association for Infectious Diseases: "Tetanus (Lockjaw)."