1 Neurological Assessment Fundamentals

Establish a baseline and examine systematically

A focused neurological examination establishes a baseline and helps identify changes over time. Observe the patient throughout the interaction, then assess mental status, motor function, sensation, and pupils systematically. Compare sides and current findings with the patient’s known baseline. Record what you observe rather than relying on vague labels such as “normal.” The examination may be expanded according to the patient’s symptoms and clinical setting.

Assess mental status

The mental-status assessment includes alertness, orientation, speech clarity, and the ability to understand and follow instructions. Gather findings through observation, direct questions, and tasks, and note the patient’s actual responses.

For example, a patient may be awake but give the wrong date, speak unclearly, or be unable to follow a simple instruction. Record these specific findings and compare them with the patient’s baseline. A new change in mental status or speech requires prompt escalation according to clinical policy.

Assess motor function

Observe spontaneous limb use and perform focused motor testing. Compare strength in corresponding muscle groups on both sides, and document which side is affected and what the patient can do.

If a patient holds both arms out and one gradually drifts downward while the other remains steady, treat the asymmetry as a finding to investigate. For a patient with an old right-sided weakness, first clarify the patient’s usual function; compare both sides and record the specific movements and degree of weakness. A longstanding finding may mean something different from a new or worsening deficit. Report a new deficit promptly according to clinical policy.

Compare sensation

For a basic comparison of light-touch sensation, ask the patient to close their eyes. Apply a light touch to corresponding areas on each side and ask whether the sensation feels the same. Use the same method on both sides, then record the location and side of any reduced or absent sensation.

Assess pupils

Compare pupil size and shape, then assess and document pupil reactivity to light, including whether the response is equal on both sides. Compare the findings with the patient’s baseline when available. New unequal pupils or a new change in reactivity should be reported promptly according to clinical policy.

Document changes and escalate appropriately

Document each component separately and specifically. For a patient who is alert and answers questions appropriately but has new right-hand weakness and reduced sensation in the right hand, record the mental-status findings separately from the motor and sensory findings. Include the affected side and specific areas tested, and state that the findings are new if they differ from baseline.

Do not dismiss a subtle difference from the documented baseline just because the patient remains awake and conversational. Reassess, describe the specific change, compare it with prior findings, and notify the appropriate clinician according to policy. Serial examinations help identify changes over time, and new abnormalities warrant further assessment.