Disease
Tetanus
Toxin-driven spastic paralysis from wounds
TET-uh-nus
High-yield clue
Lockjaw (trismus), risus sardonicus, and opisthotonos after a contaminated wound is the classic tetanus picture.
Overview
A neuromuscular syndrome caused by tetanospasmin from Clostridium tetani, studied for its rigid spastic muscle contractions. It matters as a vaccine-preventable, non-communicable disease acquired when environmental spores enter a wound.
Classification
- Neuromuscular toxin syndrome
- Spastic (rigid) paralysis pattern
- Wound-acquired, not person-to-person
- Vaccine-preventable framing
Lab & identification clues
- Trismus (lockjaw) and risus sardonicus vocabulary
- Opisthotonos (arched-back rigidity) term
- Clinical picture-based recognition; toxin blocks inhibitory signals concept
- Neonatal form from umbilical-stump contamination
Associations
- Spores enter through deep or dirty puncture wounds
- Not spread person-to-person (environmental spores)
- At-risk framing: under-vaccinated, injection drug use, neonates
- Toxoid-vaccine and booster public-health framing
Commonly confused with
- Botulism (flaccid vs spastic)
- Strychnine poisoning / dystonic reaction
Frequently asked questions
What is Tetanus?
A neuromuscular syndrome caused by tetanospasmin from Clostridium tetani, studied for its rigid spastic muscle contractions. It matters as a vaccine-preventable, non-communicable disease acquired when environmental spores enter a wound.
What is the high-yield clue for Tetanus?
Lockjaw (trismus), risus sardonicus, and opisthotonos after a contaminated wound is the classic tetanus picture.
What is Tetanus associated with?
Tetanus is associated with Spores enter through deep or dirty puncture wounds; Not spread person-to-person (environmental spores); At-risk framing: under-vaccinated, injection drug use, neonates; Toxoid-vaccine and booster public-health framing.
What is Tetanus commonly confused with?
Tetanus is commonly confused with Botulism (flaccid vs spastic) and Strychnine poisoning / dystonic reaction.
Original student-study summary. Sources checked: OpenStax Microbiology 2e, NCBI Bookshelf Medical Microbiology, and CDC topic pages where applicable; reviewed 2026-06. Educational only; no diagnosis, treatment, dosing, or specimen-handling guidance.