Headache Group

Dr Manjit Matharu MRCP, PhD

SUMMARY

The Headache Group conducts clinical and laboratory-based research into the mechanisms and management of headache syndromes.

The Headache Group has performed seminal functional imaging studies in primary headaches. Functional imaging studies had previously demonstrated specific activation of the brainstem in episodic migraine and  the posterior hypothalamus in cluster headache (CH). The group helped further refine the localisation of the brainstem activation in episodic and chronic migraine to the dorsal rostral pons using positron emission tomography (PET) and demonstrated that lateralisation of pain in migraine is due to lateralised brain dysfunction. The group have studied cerebral activation patterns in paroxysmal hemicrania (PH) and short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), which along with CH are grouped together as trigeminal autonomic cephalalgias.  Significant activation of the posterior hypothalamus and ventral midbrain region was demonstrated in PH using PET while posterior hypothalamic activation was demonstrated in SUNCT using functional magnetic resonance imaging.  In a PET study in hemicrania continua (HC), the clinical phenotype of which overlaps with migraine and the trigeminal autonomic cephalalgias, significant activation of the posterior hypothalamus, dorsal rostral pons and ventrolateral midbrain was demonstrated. These series of studies suggested that primary headache may be pathophysiologically differentiated on the basis of distinct patterns of brain activation, with hypothalamic and dorsal pontine activation as markers of trigeminal autonomic cephalalgias and migrainous syndromes, respectively.  These studies draw attention to the structures that may play a pivotal role in the pathophysiology of primary headaches.

The classification and clinical spectrum of headache disorders have hitherto been poorly defined though large strides have been made in this area over the last two decades. The Headache Group has accumulated relatively large cohorts of various headaches syndromes and systematically studied their clinical phenotypes. This has led to the further refinement of the clinical spectrum of SUNCT, short-lasting unilateral neuralgiform headache with cranial autonomic symptoms (SUNA), PH and headaches in patients with pituitary disorders.

Headache is a significant problem in patients with pituitary tumours. Dural stretch and cavernous sinus invasion were widely considered to be the mechanism of headache in pituitary disease. The Headache Group has studied a large cohort of patients with pituitary disease. The clinical characteristics of headache and the pituitary structure, including the tumour volume and extent of cavernous sinus invasion, were carefully studied. We demonstrated that there was no association between headache and pituitary structure, but there was a strong association of headache with the endocrine activity of the tumour and patients’ prior predisposition to headache. We established that headache in patients with pituitary disorders is predominantly governed by neurohumoral rather than structural factors.

The Headache Group has advanced therapeutics by  conducting controlled drug trials in various headache syndromes and describing neurostimulation in medically intractable headache syndromes. While studying patients with pituitary tumours, it was observed that octreotide, which was prescribed for endocrine indications, was effective for the treatment of headaches. This raised the possibility that this agent may be effective in primary headache syndromes. We conducted randomised controlled trials of octreotide in CH and migraine. These proof-of-principle studies established that octreotide is effective in CH but not migraine. The nominee also provided the first case descriptions of the efficacy of open-label use of topiramate in HC and SUNCT. This subsequently led to a controlled trial of topiramate in SUNCT (submitted for publication). The nominee provided the first description of the efficacy of occipital nerve stimulation (ONS) in eight patients with medically refractory chronic migraine. In addition, the nominee studied the mechanism of action of ONS using PET and described the central pain-modulating circuits that are activated in these patients during neurostimulation.

RESEARCH TEAM

Lead

Dr Manjit Matharu, Senior Lecturer and Honorary Consultant Neurologist

Clinical Research Fellows

Dr Giorgio Lambru
Dr Surat Tanprawate

Collaborators


Dr Paul Shanahan, Consultant Neurologist, The National Hospital for Neurology and Neurosurgery

Dr Declan Chard, Consultanat Neurologist, The Institute of Neurology and The National Hospital for Neurology and Neurosurgery

Dr Timothy Young, Locum Consultant Neurologist, The National Hospital for Neurology and Neurosurgery and Whittington Hospital

Mr Laurence Watkins, Consultant Neurosurgeon, The National Hospital for Neurology and Neurosurgery

Mr Ludvic Zrinzo, Consultant Neurosurgeon, The National Hospital for Neurology and Neurosurgery


Prof Marwan Hariz, Consultant Neurosurgeon, The National Hospital for Neurology and Neurosurgery

Prof Marwan Jahanshahi, Clinical Neuropyschologist, The Institute of Neurology and The National Hospital for Neurology and Neurosurgery

CURRENT PROJECTS

Functional neuroimaging studies in primary headache syndromes have strongly implicated a central role for the posterior hypothalamic and dorsal pontine activation as markers of cranial autonomic features and migrainous symptoms, respectively.  Structural neuroimaging techniques are also starting to provide an insight into the pathophysiology of primary headaches. Voxel-based morphometry, an automated whole brain technique that is sensitive to subtle macroscopic and mesoscopic structural differences between groups of subjects, has been used to demonstrate hypothalamic abnormality in cluster headache. This technique are being utilised to determine whether there are structural abnormalities in other primary headaches.

The clinical group attracts tertiary level referrals, which is facilitating the accumulation of large cohorts of relatively rare headache syndromes. The clinical phenotypes of these syndromes are being carefully defined. The current focus is on further defining the trigeminal neuralgiform disorders including short-lasting unilateral neuralgiform headache attacks with conjunctival injevtion and tearing (SUNCT), short-lasting unilateral neuralgiform disorders with autonomic symproms (SUNA) and trigeminal neuralgia.

The Headache Group was involved in pioneering the use of occipital nerve stimulation and deep brain stimulation in  intractable headaches. The long-term follow up of these patients will be described and mechanism of action of these neuromodulation techniques will be studied further with functional neuroimaging techniques.

TEACHING ACTIVITY

MSc/PhD supervision
Postgraduate teaching

MSc Clinical Neuroscience Course
Headache courses at Royal College of Physicians (London)

Undergraduate teaching

Medical student teaching

SELECTED PUBLICATIONS

Cittadini E, Matharu MS, Goadsby PJ. Paroxysmal hemicrania: a prospective clinical study of 31 cases. Brain 2008;131(Pt 4):1142-1155.

Cohen AS, Matharu MS, Goadsby PJ. Short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing (SUNCT) or cranial autonomic features (SUNA)-a prospective clinical study of SUNCT and SUNA. Brain 2006; 129: 2746-60.

Paemeleire K, Bahra A, Evers S, Matharu MS, Goadsby PJ. Medication-overuse headache in patients with cluster headache. Neurology 2006; 67: 109-13.

Schwedt TJ, Matharu MS, Dodick DW. Thunderclap headache. Lancet Neurol 2006; 5: 621-31.

Matharu MS, Cohen AS, Frackowiak RS, Goadsby PJ. Posterior hypothalamic activation in paroxysmal hemicrania. Ann Neurol 2006; 59: 535-545.

Levy MJ, Matharu MS, Meeran K, Powell M, Goadsby PJ. The clinical characteristics of headache in patients with pituitary tumours. Brain 2005; 128: 1921-30.

Afridi SK, Matharu MS, Lee L, Kaube H, Friston KJ, Frackowiak RS, et al. A PET study exploring the laterality of brainstem activation in migraine using glyceryl trinitrate. Brain 2005;128:932-939.

Matharu MS, Levy MJ, Meeran K, Goadsby PJ. Subcutaneous octreotide in cluster headache: Randomized placebo-controlled double-blind crossover study. Ann Neurol 2004; 56:488-494.

Matharu MS, Cohen AS, McGonigle DJ, Ward N, Frackowiak RS, Goadsby PJ. Posterior hypothalamic and brainstem activation in hemicrania continua. Headache 2004; 44:747-61.

Levy MJ, Jager HR, Powell M, Matharu MS, Meeran K, Goadsby PJ. Pituitary volume and headache: size is not everything. Arch Neurol 2004; 61:721-5.

Matharu MS, Bartsch T, Ward N, Frackowiak RS, Weiner R, Goadsby PJ. Central neuromodulation in chronic migraine patients with suboccipital stimulators: a PET study. Brain 2004; 127:220-230.

Matharu MS, Goadsby PJ. Persistence of attacks of cluster headache after trigeminal nerve root section. Brain 2002; 125:976-84.

Bahra A, Matharu MS, Buchel C, Frackowiak RS, Goadsby PJ. Brainstem activation specific to migraine headache. Lancet 2001;357:1016-7.

CONTACT

Dr Manjit Matharu
Senior Lecturer and Honorary Consultant in Neurology
Institute of Neurology
Queen Square
London WC1N 3BG
United Kingdom

Academic secretary: Olga Shapeero
Email: o.shapeer@ion.ucl.ac.uk
Tel: +44 (0)20 7829 8749
Fax: +44 (0)7092 120797

NHS Secretary: Clare Lipscombe
Email: drmatharuviasecretary@uclh.nhs.uk
Tel: +44 (0)8451 555000 ext: 723664
Fax: +44 (0)207 829 8784

Private Secretary: Sarah Mazdon
Email: drmanjitmatharu@gmail.com
Tel: +44 (0)7595900535
Fax: +44 (0)7092 120797

Page last modified on 25 nov 10 17:26