Monoplegia

Monoplegia is paralysis of a single limb, usually an arm, and its most common associated symptoms are weakness, numbness, and pain in the affected limb. It is a localized form falling under the broader category of hemiplegia, paralysis of half of the body, but monoplegia is confined instead to a single limb or a specific region; paralysis of the upper limb is sometimes called brachial monoplegia and paralysis of the lower limb crural monoplegia, with the lower-limb form occurring less often than the upper-limb form. A related but less severe condition, in which the limb is very weak rather than fully paralyzed, is called monoparesis.