Patients with migraine attending a specialist clinic often have more t
han one type of headache. One hundred and two patients attending the C
ity of London Migraine Clinic for the first time were asked: ''What ty
pe(s) of headache do you think you have?'' A separate diagnosis was ma
de by the doctor, who was blinded to the self-diagnosis. On clinic dia
gnosis, 27 (26.5%) patients were found to have migraine plus an additi
onal non-migraine headache. When compared with the self-diagnosis, 15
(56%) of these had correctly self-diagnosed two types of headache. Man
y migraineurs can distinguish migraine from non-migraine headaches whe
n they have both.