Curr Pain Headache Rep. 2008 Apr;12(2):122-7.
Medication-overuse headache in patients with cluster headache.
Paemeleire K, Evers S, Goadsby PJ.
SourceHeadache Clinic, Department of Neurology, Ghent University Hospital, De Pintelaan 185, B-9000 Ghent, Belgium. koen.paemeleire@ugent.be

Abstract
Cluster headache (CH) is associated with the most severe pain of the primary headache disorders. Barriers to optimal care include misdiagnosis, diagnostic delay, undertreatment, and mismanagement. Medication-overuse headache (MOH) may further complicate CH and may present as increased CH frequency or development of a background headache, which may be featureless or have some migrainous quality.

A PERSONAL OR FAMILIAL HISTORY OF MIGRAINE APPEARS TO BE STRONGLY ASSOCIATED WITH THE DEVELOPMENT OF MOH IN CH....  PATIENTS WITH CH, ESPECIALLY THOSE WITH A PERSONAL AND/OR FAMILY HISTORY OF MIGRAINE, MUST BE CAREFULLY MONITORED FOR MOH, AND MEDICATION WITHDRAWAL SHOULD BE CONSIDERED IF A CH PATIENT PRESENTS WITH FEATURES OF MOH.

PMID:18474192[PubMed]

Totally agree with the excellent suggestion.