Numbness / tingling / altered sensation | Medical Council of Canada
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MCC Examination Objectives Medical expertNumbness / tingling / altered sensation

Numbness / tingling / altered sensation

Version: March 2026
Legacy ID: 66

Rationale

Patients often present with altered sensation, such as numbness or tingling, as an isolated concern. Such symptoms may result from a range of underlying causes, some of which are serious.

Causal Conditions

(list not exhaustive)

  1. Peripheral neuropathy (e.g., diabetic neuropathy, carpal tunnel syndrome, radiculopathy)
  2. Central nervous system disorders (e.g., multiple sclerosis)
  3. Dermatologic conditions (e.g., herpes zoster infection, angioedema)
  4. Mental disorders (e.g., panic disorders)

Key Objectives

Given a patient presenting with altered sensation, such as numbness or tingling, the candidate will diagnose the cause, severity, and complications, and initiate an appropriate management plan.

Enabling Objectives

Given a patient with altered sensation, such as numbness or tingling, the candidate will

  1. list and interpret critical clinical findings, including those based on
    1. a history that is relevant to potential underlying causes (e.g., diabetic risk factors, workplace risk factors, distribution of symptoms, psychological stress), and
    2. a physical examination including a thorough neurologic examination;
  2. list appropriate investigations and interpret the results of the investigations (e.g., fasting glucose level, nerve conduction studies) while recognizing that investigations may not be required in many cases;
  3. construct an effective initial management plan based on the working diagnosis, including
    1. providing appropriate continuing assessment and ongoing care,
    2. determining if the patient requires specialized care, and
    3. advising the patient on work-related issues if necessary.