Facial nerve paralysis. Facial nerve paralysis most commonly causes a unilateral, but sometimes bilateral, paralysis of the muscles responsible for facial expression. Patients often present unable to move the lip or blink and with a droopy ear and severe ptyalism.
The Fourth World is an extension of the Three-World Model, used variably to refer to. Sub-populations socially excluded from global society; Hunter-gatherer, nomadic, pastoral, and some subsistence farming peoples living beyond the modern industrial norm.
In present-day English, the term Third World is used in reference to the developing countries of Asia, Africa and Latin America. The term usually suggests poverty and low level of industrial development and thus it is the opposite of the term developed nations. This usage is considered by some offensive.