Figures for the number of full-time and part-time teacher sickness absences in local authority maintained schools in England, calendar years 2000 to 2007, are published in table 13 of the School Workforce Statistical First Release, January 2008 (Revised) at the following web link:
http://www.dcsf.gov.uk/rsgateway/DB/SFR/s000813/SFR262008 tables.xls
Information on the type of illness is not collected centrally.