Oculogyric crisis

An oculogyric crisis describes a patient's fixed upward gaze and is a side effect of some medications, most of which are neuroleptics. It usually starts with restlessness and a fixed gaze that gradually turns upwards. It is often accompanied by the head being flexed backwards at the neck, a widely opened mouth, and tongue protrusion. 
If a crisis manifests, an antchlorine drug should be administered as an antidote. Symptoms are usually relieved in about five minutes, but may take as long as thirty minutes. Any medication that triggers such a reaction should be discontinued and marked in the chart as contra-indicated for the patient.
Oculogyric crisis at Wikipedia