A Minimally Conscious State (MCS) is a condition of severely altered consciousness where a person shows inconsistent but definite signs of awareness. Individuals in MCS may respond to simple commands, exhibit emotional responses, or demonstrate purposeful behavior, although these actions are not consistent. MCS is different from a Coma or Vegetative State, where there is no awareness or response to the environment. Diagnosis often involves careful observation and assessment by medical professionals, and recovery can vary widely among individuals, with some regaining more cognitive function over time.