Rare Types of Headache Sunday 31 May 2009. The Migraine Trust and OUCH (UK) (Organisation for the Understanding of Cluster Headaches) are holding a one day event focusing on rare types of headache and the treatment options available. The day is aimed at sufferers, their families and health professionals and gives participants the opportunity to put questions to experts in the field and to meet others whose lives may be affected. The day costs £12 to include lunch and refreshments. To book your place please email education@migrainetrust.org or write to Education & Research Dept, The Migraine Trust, 55 Russell Square, London, WC1B 4HP or ring us on 020 7462 6605 by 19 March 2009.