Work

Transient side shift of cluster headache attacks after unilateral greater occipital nerve injection

Year: 2023
Type: article
Study design: Case Report
Abstract: Attacks of cluster headache (CH) are usually side-locked in most, but not all, patients. In a few patients, the side may alternate between or, rarely, within cluster episodes. We observed seven cases in whom the side of CH attacks temporarily shifted immediately or shortly after unilateral injection of the greater occipital nerve (GON) with corticosteroids. In five patients with previously side-locked CH attacks and in two patients with previously side-alternating CH attacks, a side shift for several weeks occurred immediately (N = 6) or shortly (N = 1) after GON injection. We concluded that unilateral GON injections might cause a transient side shift of CH attacks through inhibition of the ipsilateral hypothalamic attack generator causing relative overactivity of the contralateral side. The potential benefit of bilateral GON injection in patients who experienced a side shift after unilateral injection should be formally investigated.
Language: English
Field: Medicine
Open Access status: hybrid
Estimated APC paid: $3,950
OpenAlex ID: W4382011277
FWCI: 1.014
Cites: 16
Cited by: 5
Related to: 10