Headache Flashcards
Define Cushing’s triad
Autonomic response to raised ICP characterised by:
- Increased BP
- Irregular breathing
- Bradycardia
The majority of extra-dural haematomas occur where and result from damage to which artery?
Temporal region where skull fractures will lead to rupture of the middle meningeal artery
What is the classic history associated with an extradural haemotoma?
Headache as a result of an acceleration-deceleration trauma or blow to the side of the head
Where does a subdural haemotoma most commonly occur?
Around the frontal and parietal lobes
Give 3 risk factors for the development of a subdural haemotoma
- Old age
- Alcoholism
- Anticoagulation
What is the classical position of pain in a subarachnoid haemorrhage?
Sudden occipital headache
Recall the ‘shape’ of an extradural and subdural haematoma on CT respectively
Extradural - Convex
Subdural - Concave
Outline 5 structures that can be implicated in the pathology of headache.
- Trigeminalvascular system
- Meninges
- CSF containing structures
- Muscle
- Nerves
Give 5 examples of pathological processes that can lead to headache
- Neurogenic inflammation
- Inflammation
- Infection
- Pressure
- Obstruction
What is the most common form of primary headache?
Migraine
Give 3 disease mechanisms that can lead to secondary headaches
- Space occupying lesions
- Intracranial hypertension
- Vasculitis/ arteritis
Give 2 medications that you should ask about when taking a history relating to headache
- Oral Contraceptive Pill
2. Codeine
On clinical examination, papilloedema is a sign of what disease mechanism?
Raised intracranial pressure
What 2 visual field changes are associated with raised ICP?
- Peripheral field loss
2. Enlarged blinds spots
What are the 2 potential causes of a 6th nerve palsy in the context of headache?
- Raised intracranial pressure
2. Giant cell arteritis
The combination of headache and ataxia points towards what disease process?
A lesion in the posterior fossa pressing on the cerebellum
What is oral hairy leukoplakia and what organism causes this clinical sign?
White patch on the lateral border of the tongue - caused by infection with EBV
What is the clinical significance of oral hairy leukoplakia?
It is an indication of immunodeficiency - i.e. patient is susceptible to opportunistic infections.
Define levido reticularis
Mottled reticulated vascular patterns that appear on the skin.
Give 3 conditions in which levido reticularis may be seen
- Antiphospholipid syndrome
- Lupus
- Vasculitis
Xanthochromic spinal fluid can indicate which condition?
Subarachnoid haemorrhage
Which 2 blood results are required for the investigation of potential giant cell arteritis
- ESR
2. CRP
What is the immediate intervention for giant cell arteritis?
60mg prednisolone orally and referral for temporal artery biopsy
What percentage of migraine sufferers experience auras?
20-30%
Give 4 neurological conditions in which cortical spreading depression has been observed
- Cerebrovascular accident
- Subarachnoid haemorrhage
- Traumatic brain injury
- Epilepsy
Name 3 anti-emetics that can be used in the management of headache associated nausea/ emesis
- Domperidone
- Prochlorperazine
- Metoclopramide
Why are soluble tablets preferential when prescribing for migraine patients?
Migraine is often associated with gastric stasis and poor absorption - hence the feelings of nausea and emesis
What is the mechanism of action of Triptans?
Strong agonist action at the 5-HT (serotonin) receptors. Have been shown to induce vasoconstriction in vascular smooth muscle.
Name 2 triptans used in the treatment of migraine
- Sumatriptan
2. Zolmitriptan
Specifically in the CNS, name two brain structures targeted by triptans
Pre and post synaptic receptors in the:
- Midbrain
- Trigeminal nucleus caudalis
Which brain structure has been particularly implicated in the generation of migraines?
Trigeminal nucleus caudalis
Which medical conditions is a contra-indication for the use of triptans?
History of ischaemic heart disease or TIA
Recall the 4 criteria that are considered indications for prophylactic migraine treatment
- Quality of life is severely affected
- Two or more attacks per month
- Migraine attacks do not respond to acute drug treatments
- Frequently, very long and uncomfortable auras occur
Name 2 anti-epileptic medications that can be used as second line prophylactic treatment for migraine
- Sodium Valproate
2. Topirimate