Al-Nusra's role in the anti-Assad fight also represents a headache for Western leaders debating whether to arm Syrian rebels.
And in that sense, if Brexit happened, the prospect of Northern Ireland sharing an open border with the Republic of Ireland would obviously represent a considerable headache.
This may represent a bigger headache for the Tories than Labour or the LibDems given that in the last few days the Tories have committed themselves to £6bn of tax cuts and £8bn of increased spending on the NHS, without saying where the money for these giveaways would come from.
Carbon footprint is important to businesses now more than ever for a number of reasons; it's an key measure of sustainability, something stakeholders of all stripes are increasingly paying attention to, and it can be important to customers interested in the reputation of a business, as well as NGOs who could represent a considerable headache if that aspect of the business isn't well-managed.
Recently, novel non invasive neurostimulation approaches have been used successfully for different forms of headache: they represent a promising opportunity in headache management useful for acute and preventive treatment of migraine.
Used books represent a huge inventory headache for e-tailers but are wonderfully suited to casual in-person browsing, and not just because they smell so freaking good.
With pools of water lying all across the Old Course layout and the surrounding streets and car parks completely saturated, the bad weather represents a real headache for the organisers.
Hemicrania continua (HC) represents a primary headache characterized by a continuous pain with exacerbations that can include cranial autonomic symptoms as part of phenotype.
Clinical observations also report that FMS patients with concurrent headache, particularly migraine, often present an exacerbation of their typical FMS symptomatology in concomitance with or immediately subsequent to a headache attack, suggesting that headache may represent a triggering factor for fibromyalgia pain.
Chronic headaches represent a challenge for physicians, given their frequent resistance to therapies, risk of relapse and associated comorbidities.
