R (P) v MHRT East Midlands and North East Region [2002] EWCA Civ 697

Psychopathic disorder can persist for years without causing any abnormally aggressive or seriously irresponsible conduct; it is enough that the disorder of mind has done so in the past and that there is a real risk that, if treatment in hospital is discontinued, it will do so in the future.

Related case

See also R (P) v MHRT East Midlands and North East Region [2002] EWCA Civ 260 (permission to appeal to CA)

Update

A change made by the Mental Health Act 2007 is related to this case. See Appropriate treatment test replaces treatability test and applies to all patients under long-term detention 3/11/08

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