What does hemiplegia refer to?

Hemiplegia refers specifically to complete paralysis of one side of the body, which is a condition often resulting from a neurological event such as a stroke or brain injury. This paralysis typically affects the arm, leg, and sometimes the torso on the affected side and can significantly impact a person's mobility and function. Given that hemiplegia involves the total loss of motor function on one side, it is essential to identify it correctly among other conditions that may present with weakness, sensation loss, or tingling.

The other options you provided describe different neurological deficits. Weakness in the legs relates to paraplegia or other forms of motor impairment rather than hemiplegia. Loss of sensation on one side of the body may align more closely with hemihanaesthesia or conditions affecting sensory pathways, while tingling in the limbs, known as paresthesia, can indicate nerve damage or issues but does not encompass the complete paralysis characteristic of hemiplegia.