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Neuro History

Neurological History-Taking

February 15th, 2021


Careful history-taking can be used to identify and localise a patient's neurological pathology. By understanding the circumstances and natural history of a neurologic event, it is possible to narrow down the list of likely causes for a patient's presentation.

Presenting Complaint

Start by asking the patient what their main reason for presenting was.
  • Common neurological presenting complaints include:
  • Headache
  • Seizures
  • Presyncope or syncope
  • Muscular symptoms - weakness, tremor, spasm
  • Peripheral sensory symptoms - numbness, paraesthesia
  • Visual changes - blurring, diplopia
  • Hearing changes - hearing loss, tinnitus
  • Olfactory changes - loss of olfactory sensation, altered olfaction
  • Vertigo (sensation of the room spinning)
  • Instability

History of Presenting Complaint

Ask for more information about the patient's presentation. Start by asking general questions, and then narrow down your questioning over the course of history-taking.
  • Handedness

  • Ask the patient if they are left or right-handed. This is an indicator of the dominant hemisphere (usually contralateral to the dominant hand).
  • Description of a Single Episode

    Following a seizure, headache, syncope, presyncope or other concerning episode, certain questions can help to narrow down the list of differential diagnoses:
  • Before the episode - palpitations, lightheadedness, visual changes, other sensory changes
  • During the episode - length of the episode, loss of consciousness, arm / leg movement, eye movement, loss of consciousness, tongue biting
  • After the episode - focal limb weakness, fatigue, confusion
  • Pattern of Events over Time

  • If the type of episode has happened before, attempt to understand the natural history of these episodes. Ask about when the first event was, then the latest event was, the approximate frequency of events, and whether they remain complement normal between events.
  • Circumstances

  • Ask about what brings on the episodes. For example, any changes in position; preceding trauma; whether the events happen during the day or at night; and whether the patient was indoors or outdoors.

Past Medical History

Ask about whether the patient has been diagnosed with any medical conditions. If so, ask about the management of these conditions, and any complications.

Medication History

Ask about what medications the patient takes regularly, what they take them for, and what side effects they have had.

Family History

Ask whether anyone in the family has had any neurologic conditions in the past. Attempt to determine whether any conditions have a clear pattern of transmission - autosomal dominant, autosomal recessive or X-linked.
  • Inherited neurologic disorders include:
  • Dementias - familial Alzheimer's, CADASIL
  • Ataxia - friedreich ataxia, ataxia-telangiectasia, spinocerebellar ataxia
  • Hereditary neuropathies - Charcot-Marie-Tooth, hereditary neuropathy with liability to pressure palsies
  • Muscular dystrophies - Duchenne, Becker, facioscapulohumeral, myotonic dystrophy
  • Spinal muscular atrophy
  • Inherited forms of epilepsy
  • Hereditary spastic paraplegia
  • Huntington's disease
  • Neurofibromatosis
  • Tuberous sclerosis
  • Mitochondrial disorders

Social History

It is important to understand any patient's social situation when taking their history. This includes key aspects such as their occupation (or previous occupation, if retired), living situation, mobility, ability to perform activities of daily living, diet and exercise.
Patients with neurologic disease may be significantly functionally impacted by their disease.

Substance History

Take a detailed smoking history: identify how many years the patient has smoked for, how many they smoked per day, and how long since they quit (if applicable. 
Ask about alcohol intake: how many drinks the patient has per week, what type of drinks, and whether they have considered cutting down their intake if heavy.
Finally, ask about recreational drug use, and particularly intravenous drug use. 
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