In all claims of nervous shock a key criterion for recovery is that the claimant has suffered a medically recognised form of psychiatric illness. Liability will not arise for fear, distress or mental grief caused by negligence. For example, in Reilly v Merseyside HA [1995] 6 Med LR 246 the court refused to compensate a couple trapped in a lift for over an hour for what the court considered to be only normal human emotion following an unpleasant experience.