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Table50.3AEDtherapyofchoicebyseizuretype
Seizuretype First-linetreatmentoptions
Focal Carbamazepine
Lamotrigine
Generalizedtonic–clonic Sodiumvalproate
Lamotrigine
Carbamazepine
Oxcarbazepine
Absence Ethosuximide
Sodiumvalproate
Myoclonic Sodiumvalproate
Topiramate
Levetiracetam
Tonic/atonic Sodiumvalproate Lamotrigine
Monitoringandfollow-up
Allpatientsshouldbereviewedatleastannually.
Specialconsiderations
Contraception
FemalepatientswithepilepsyshouldbecounselledonthepossibleinteractionsoftheirAEDwith
contraception.Emphasis should also be placed onthe importance of using barrier protection in
additiontooralhormonaltherapy.
Pregnancy
High-dose folicacid(5mgOD)isrecommendedinallwomenplanning apregnancywhenusing
AEDs
Sodium valproateshould be avoided in women of childbearing age,unless alternatives are not
available,duetothehighriskofteratogenicity
Breastfeeding while taking AEDs is usuallysafe.The risk ofeachAED tothebaby should be
considered and a discussion should be held with the patient regarding the specific risks and
benefits.
Clinicians should notforget togive additional safety advice to parentswithepilepsy regarding
safetyprecautionswhencaringfortheirnewborn.
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Furtherreading
1.InternationalLeagueAgainstEpilepsywebsite.Availableat:https://www.ilae.org/
2.EpilepsySocietywebsite.Availableat:http://www.epilepsysociety.org.uk
3.EpilepsyActionwebsite.Availableat:http://www.epilepsy.org.uk
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Chapter51
Headache
Guideline: NICE CG150 (Headaches in over 12s: diagnosis and
management):https://www.nice.org.uk/guidance/cg150
OUPdisclaimer:OxfordUniversity Press makesno representation, express
or implied, that the drugdosagesarecorrectand thatthe recommendations
are an exclusive or mandatory course of care. All health professionals
readingthistexthavearesponsibilitytoevaluateitsappropriatenessandtake
theindividualneedsofthepatientintoaccount.
Localtrustguidelines:pleaserefertoyourlocalguidelinesasnecessary.
Overview
Headache isthe commonest neurologicalsymptom which presents to both primary and
secondary care. The causes can be classified into primary (underlying aetiology
unknown)andsecondary(whenattributedtoanunderlyingdiseaseordisorder).
Diagnosis
Differentialdiagnosis
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Primaryheadachedisorders
Migraine
Tension-typeheadache
Clusterheadacheandothertrigeminalautonomiccephalalgias
Secondaryheadachedisorders
Iatrogenic
Medicationoveruseheadache
Inflammatoryconditions
Giantcellarteritis
Raisedintracranialpressure
Tumour/metastaticdisease
Abscess
Benignintracranialhypertension
Centralnervoussysteminfections
Meningitis
Encephalitis
Vasculardisorders
Haemorrhage:extradural/subduralhaematoma/subarachnoidhaemorrhage
Thrombosis:corticalveinthrombosis,venoussinusthrombosis,stroke.
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Table51.1Clinicalfeaturesofkeydifferentialdiagnosesforaheadache
Tension
type
Migraine Cluster Medicationoveruse
headache
Site Bilateral Unilateralorbilateral Unilateral(around/abovethe
eye)
Variable
Character Mild–
moderate
bandlike
pressureor
tight
sensation
Moderatetosevere
pulsatingpain
Severeorveryseverepainofa
variablenature—maybe
burning,throbbingorsharp
Variable
Duration 30minutes
continuous
4–72hours Upto2hours,butusually30–
90minutes
Variable
Associated
symptoms
Doesnot
interfere
withdaily
activities
Sensitivitytolight/sound
Nausea/vomiting
Precedingaura(even
withoutaheadache)—
lasting5–60minutes,
withreversible
symptomssuchas:
Flashing lights,
flickeringspots/lines,or
visualloss
Numbness or pins and
needles
Speechdisturbance
Autonomicsymptomsonthe
samesideastheheadachesuch
asnasalcongestionorrunny
nose,redorwateringeye,
swolleneyelid,forehead
sweating,miosis,andptosis
Patientisagitatedandrestless
duetothepain
Headache
developed/worsenedafter
takingregularanalgesics
Triptans/ergots/opioids>10
days/month
NSAIDs/paracetamol/aspirin
>15days/month
Subtypes Chronic:
15days
permonth
for>3
months
Menstrual:migraines2
dayspriorto,orwithin3
daysofstarting
menstruationforatleast
2outof3consecutive
cycles
Chronic:15daysper
monthfor>3months
History
Carefulhistorytakingiskeytoidentifyingtheunderlyingcause
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Presentingcomplaint:headachefeatures(Table51.1)
Pastmedicalhistory
Previousheadachedisorders
Intracranialbleedsorthromboses
Procoagulantriskfactors,e.g.cancer,factorVLeidendeficiency
Previousintracranialsurgery
Medications
Evidenceofmedicationoveruse.Askparticularlyabout:
Paracetamol,aspirin,andNSAIDs
Triptans
Opioids
Ergots,e.g.dihydroergotamineandergotamine
Combinationanalgesics,e.g.co-codamol
Anticoagulantsorantiplateletsincreasingtheriskofbleeding
Anyregularmedicationsthepatientmayusewhereheadacheisasideeffect
Familyhistory
Socialhistory
Alcoholhistory(abusecanincreaseriskoftraumatichaemorrhage)
Illicitdruguse(couldtheheadachebewithdrawalrelated?)
Effectofheadachesonactivitiesofdailyliving
Consider asking the patient to usea headachediary(minimum of 8 weeks) tolookfor patterns
whichmay pointtowards aparticular diagnosis.The diaryshoulddocumentfrequency, duration,
and severity of headache, associated symptoms, possible triggers, analgesia used, and any
relationshipoftheheadachestothemenstrualcycle.
Painhistory
Don’tforgettheacronym‘SOCRATES’:
Site:unilateral?Bilateral?
Onset:sudden(thunderclap)?Gradual?
Character:throbbing?Stabbing?Dullache?
Radiation:neck?Occiput?Eye?
Associatedsymptoms:symptoms?Nausea?Aura?
Time:duration?Episodicorcontinuous?Frequency?Relationshiptomenstrualcycle?
Exacerbatingandalleviatingfactors
Severity:scoreoutof10.
Redflags
Bewareof thefollowingfeatures in the historyof anew-onset headachethatcanpoint
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towardsasinisterunderlyingcause, for whichyoushould considerurgent investigation
oronwardreferral:
Fever,rash,orneckstiffness(suggestiveofmeningitisorinfection;seeChapter52)
Sudden-onset, reaching maximum intensity within 5 minutes (suggestive of subarachnoid
haemorrhage)
Newneurologicalorcognitivedeficit,personalitychange,or↓levelofconsciousness(suggestive
ofintracranialhaemorrhage,stroke,orspace-occupyinglesion;seeChapter56)
Recenttrauma(suggestiveoftraumatichaemorrhage,withinthelast3months)
Headache worsening with cough, sneeze, Valsalva, or posture (suggestive of ↑ intracranial
pressure)
Severe eyepainor temporalarterytenderness(suggestiveofothersecondaryheadachessuchas
glaucomaorgiantcellarteritis;seeChapter84)
Vomiting
History of immunocompromise, previous or current malignancy (increases suspicion of
intracranialinfectionormalignancy).
Examination
Afullneurologicalexaminationmustbeperformedtoelicitanyfocaldeficits
Assessmentofcognitivefunction
Ophthalmoscopyshouldassessforpapilloedema
If the history is suggestive, look for evidence of meningeal irritation(Kernig’s or Brudzinski’s
signs;seeChapter52)andarash.
Investigations
Suspectedprimaryheadachedisorders
Imaging
Neuroimagingmaybeconsideredforafirstboutofclusterheadaches.
Suspectedsecondaryheadachedisorders
Bedside
Pyrexia,tachycardia,orhypotensionmaypointtowardsmeningitis.
Bloods
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FBC,CRP—elevatedininfection
ESR—elevatedintemporalarteritis
U&EandLFTfunctionifprescribingantibioticsforsuspectedintracranialinfection
Coagulationprofile—particularlyifapatientisonanticoagulantsandanintracranialhaemorrhage
issuspected.
Imaging
CTheadshouldbeconsideredforanyonewithsymptomstoassessforintracranialpathology.
Other
LPasguidedbyspecialistsorseniorclinicians:
Send for cell count, protein, glucose, Gram stain, and viral PCR in cases of suspected
intracranialinfection
Measureopeningpressure
Xanthochromiaifsuspectedsubarachnoidhaemorrhage.
Management
Primaryheadachedisorders
Patienteducation
In the managementof all patientswithheadaches, ensure thatthe patient and their relatives are
informedofthediagnosis,reassuredthatotherpathologyhasbeenexcluded,andgivenoptionsfor
management
Trytoprovidewritteninformationaswellasdetailsofsupportorganizations
Recommendtokeepaheadachediary.
Pharmacologicalmanagement
SeeTable51.2.
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Table51.2Managementofprimaryheadachedisorders
Acute Prophylactic
Tension Aspirin/paracetamol/NSAIDs
Donotofferopioids
Acupuncture(10sessionsover5–8weeks)
Migraine Oraltriptan,e.g.zolmitriptan2.5mg+
NSAIDOR
Oraltriptan+paracetamol
Ifthepatientisabletotolerateonlyasingle
agent,considertriptan,high-doseaspirin
(900mg),NSAID,orparacetamol
Iforalagentsarenottolerated,considerIM
metoclopramideorprochlorperazine+/-IM
NSAIDornasaltriptan
Considerantiemeticsinallpatients
Firstline:topiramate(initialdose25mgODthen
titrated)orpropranolol(80–240mgODindivided
doses)
Secondline:amitriptyline(initialdose10–25mgOD
thentitrated)
±Riboflavin400mgOD—canreducemigraine
severityandfrequency
±Acupuncture(10sessionsover5–8weeks)
Reviewafter6monthsoftreatment
Menstrualrelated
migraine
Trialtheabove-listedmigrainetreatments Ifacutetreatmentsareineffective,consider
frovatriptan(2.5mgBDPO)orzolmitriptan(2.5mg
BD–TDSPO)onthedaysofexpectedmigraine
Ifdifficulttopredictexactdateofmigraineonset,use
for2daysbeforemenstruationispredictedtostart,
until3daysafterstartofmenstruation
Cluster Oxygen(100%withaflowofatleast
12L/minviaanon-rebreathemask,canbe
providedathome)
SC(e.g.sumatriptan6mg)ornasal(e.g.
zolmitriptan5mg)triptans
Verapamil—undertheguidanceofaspecialist
Secondaryheadachedisorders
Principlesofmanagement
Stabilizethepatient using anABCDEapproach,particularlyiftheGCSscoreis reduced,dueto
therisksofrespiratorycompromise.Involvehigherlevelcareifnecessary
Call forhelp:manysecondaryheadachesare emergenciessoensureearlyescalationtoa senior
clinicianandinvolverelevantspecialities(e.g.neurosurgery,ophthalmology)assoonaspossible
Specificmanagementwilldependupontheidentifiedunderlyingcauseofthe headache,andmay
includelifestyleadvice,pharmacologicalinterventions,orevensurgery.
Medicationoveruseheadache
Advisethepatienttostoptakingtheoverusedmedicationabruptlyforatleast1month
Informthemthatsymptomsofheadachemayinitiallyworsenbeforetheyimprove
Reviewafter4–8weeks.
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Specialconsiderations
Specialistreferral
Migrainewithanyofthefollowingatypicalaurasymptoms:
Motorweakness
Doublevision
Unilateralvisualsymptoms
Poorbalance
↓GCSscore
Prolongedaura(>1hour)
Formanagementofmigraineprophylaxisinpregnancy
Foradviceonclusterheadacheprophylaxis
Ifpatientshaveanywhichmightpointtowardsasinisterunderlyingcause
Ifmedicationoveruseheadacheisduetoopioiduse
Chronicmigrainerefractorytofirst-linetreatments.
Pregnancyandwomenofchildbearingage
DosageadjustmentsmaybenecessaryaspertheBNF.Keypointstorememberinclude:
Topiramate is teratogenic and may impair the effectiveness of some hormonal contraceptives.
Womenshouldreceivecarefulcounsellingregardingappropriatecontraception
Intheacutemanagementofmigraines,paracetamol isasafetreatmentinpregnancy,butifthisis
ineffective,therisksoftriptansandNSAIDsshouldbediscussedandcanbeoffered
Seekspecialistadvice in pregnancy with the useof all prophylactic agents for the treatmentof
migraine
Combinedhormonalcontraceptioniscontraindicatedforwomenwhohavemigrainewithaura.
Furtherreading
1. Manji H, Connolly S, Kitchen N, et al. (2014). Topics on headache. In: Oxford Handbook of
Neurology, 2nd ed (Chapter 5). Oxford: Oxford University Press. Available at:
https://doi.org/10.1093/med/9780199601172.003.0005_update_001
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