"Contributory negligence" is a legal term that is used when discussing an injury-related lawsuit. If the plaintiff failed to practice proper care during their treatment period, resulting in injuries, this is contributory negligence. If the plaintiff played any role in worsening their own condition, it is considered contributory negligence. For example, countless missed doctor's appointments or not consulting a recommended specialist could result in contributory negligence. However, this does not mean the defedant cannot share some of the blame. You can still win a case even if you were negligent, but that fact will weaken your claim.