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Cannabis: Misuse

Volume 502: debated on Wednesday 16 December 2009

To ask the Secretary of State for Health how many (a) people and (b) people under 18 years old were treated for cannabis-induced psychosis in each of the last five years. (307362)

Data are not collected centrally about how many people were treated for cannabis-induced psychosis each year because data counts patient episodes, not individual patient numbers, and individual patients may be seen more than once during each year.

Data are collected centrally about the number of finished hospital admission episodes for patients with a primary diagnosis of mental and behavioural disorders due to use of cannabinoids, under the care of a mental health consultant. This information is shown in the following table.

Data are not collected centrally about the numbers treated for cannabis-related mental illness in primary care.

Finished admission episodes with a primary diagnosis of mental and behavioural disorders due to use of cannabinoids: activity in English national health service hospitals and English NHS-commissioned activity in the independent sector 2004-05 to 2008-09 under consultant mental health specialties

2004-05

2005-06

2006-07

2007-08

2008-09

Total all ages

752

786

616

579

519

Aged 18 years or over

708

745

570

553

499

Aged under 18 years

44

41

32

26

19

Age not known

0

0

14

0

1

Source:

Hospital Episode Statistics (HES), The NHS Information Centre for health and social care.