Hemiplegia

Hemiplegia is a condition where there is paralysis in one vertical half of a patient's body. This is not hemiparesis wherein one half of the body is weakened, i.e. one arm and its corresponding leg are weak. Hemiplegia is similar to hemiparesis, but hemiparesis is considered less severe.

Causes
It can be congenital (occurring before, during, or soon after birth) or acquired (as from illness or stroke).

It is usually the result of a stroke, although disease processes affecting the spinal cord and other diseases affecting the hemispheres are equally capable of producing this clinical state. Hemiplegia can be a more serious consequence of stroke than spasticity.

Cerebral palsy can also affect one hemisphere, resulting in limited function. This does not cause paralysis but instead causes spasms. Cerebral palsy where this is the only symptom is often referred just as hemiplegia.

Type 2 diabetes mellitus can lead to transient hemiplegia.

A rare cause of hemiplegia is due to local anaesthetic injections given intra-arterially rapidly, instead of given in a nerve branch.

Hemiplegic migraine
Hemiplegic migraine is a form of migraine during which the person will experience the feeling of numbness on one side of their body. This feeling will usually pass within 2-12 hour.