HINTS+ Exam Demystified: Differentiating Central vs. Peripheral Causes of Acute Dizziness

Master the HINTS Exam for Acute Dizziness Assessment

This Embodia vestibular physical therapy course focuses on the HINTS+ exam, a critical bedside skill for assessing acute dizziness and vertigo in clinical practice. Designed as an online, on-demand training, the course serves practicing clinicians including physical therapists, vestibular therapists, chiropractors, and athletic therapists who regularly encounter patients presenting with acute vertigo.

The HINTS+ exam helps differentiate central vs peripheral causes of acute vestibular syndrome at the bedside, often before imaging becomes diagnostically useful. For clinicians managing dizziness, this skill can be the first step toward accurate diagnosis and appropriate patient management.

This training fits within Embodia’s broader vestibular physical therapy course collection, complementing other dizziness assessment and vestibular rehabilitation courses on the platform.

Key benefits of this course:

• Learn a validated bedside exam that can outperform early MRI in specific clinical scenarios

• Gain confidence distinguishing dangerous central presentations from peripheral vestibular disorders

• Access practical, evidence-informed instruction you can apply immediately

Why the HINTS Exam Matters in Clinical Practice

Dizziness accounts for a significant proportion of emergency department visits and rehabilitation consults. Yet stroke is commonly missed in dizzy patients—studies suggest that posterior circulation strokes presenting primarily with vertigo are misdiagnosed in a notable percentage of cases during initial evaluation.

Acute vestibular syndrome refers to acute onset, continuous vertigo or dizziness lasting more than 24 hours, accompanied by nausea, vomiting, spontaneous nystagmus, and gait unsteadiness. Within this population, distinguishing stroke from vestibular neuritis or other peripheral causes is critical but challenging.

Early CT has significant limitations for detecting posterior circulation stroke, and MRI may not be immediately available or may appear normal in the hyperacute phase. This is where a structured bedside dizziness exam becomes invaluable. An accurately performed HINTS exam, when used by trained clinicians within the correct clinical context, can demonstrate superior sensitivity to diagnose stroke compared to early MRI in selected patients with acute vestibular syndrome.

Why the HINTS+ test matters in real-world practice:

• Provides rapid bedside differentiation before imaging results are available

• Can identify central vestibular disorders that require urgent intervention

• Reduces reliance on imaging that may be inconclusive in early stroke

• Applicable across settings: emergency departments, urgent care, direct-access physical therapy, vestibular clinics, and neurology or stroke rehab

• Helps clinicians avoid both over-referral and dangerous under-recognition of stroke

What is the HINTS+ Exam?

HINTS is an acronym for Head Impulse, Nystagmus, Test of Skew. This three-part bedside examination is designed for patients presenting with continuous acute vestibular syndrome - not brief positional vertigo like benign paroxysmal positional vertigo.

The exam aims to distinguish central causes (such as posterior circulation stroke) from peripheral origin conditions (such as vestibular neuritis) by evaluating the vestibular system and oculomotor examination findings.

The three components of the HINTS exam:

• Head Impulse Test: Evaluates the vestibulo-ocular reflex using rapid, small-amplitude passive movements of the patient’s head. A normal head impulse response in a patient with acute vestibular syndrome raises concern for a central lesion.

• Nystagmus Assessment: Observes for direction-fixed (unidirectional nystagmus) versus direction-changing gaze-evoked nystagmus. Direction-changing nystagmus with gaze suggests central pathology.

• Test of Skew: An alternate cover test detecting skew deviation - vertical ocular misalignment suggesting brainstem involvement.

Certain patterns increase concern for a central lesion: normal head impulse test, direction-changing nystagmus, or presence of skew deviation. Conversely, an abnormal impulse test with unidirectional nystagmus and no skew typically suggests peripheral vestibular loss.

The course demonstrates each step with clinical video examples and addresses patient safety considerations, including cervical spine contraindications when performing rapid head movements.

What You Will Learn in This Vestibular Physical Therapy Course

This Embodia course provides step-by-step, clinically focused training on the HINTS exam within a broader dizziness assessment framework. Participants will gain practical skills they can implement immediately.

Clinical skills you will develop:

• Confidently performing each component of the HINTS test on appropriate patients with acute vestibular syndrome

• Recognizing red-flag central patterns and knowing when to escalate for urgent neuroimaging or stroke evaluation

• Distinguishing acute vestibular neuritis and other peripheral vestibular causes from concerning central presentations

• Integrating HINTS findings with history, neurologic screening, and gait assessment to refine dizziness differential diagnosis

• Applying the examination in real-world scenarios using case-based examples

• Understanding when the test is inconclusive and alternative evaluation strategies are needed

The course includes downloadable clinical resources to support bedside use. Content is evidence-informed, referencing key HINTS studies while keeping explanations practical and accessible for busy clinicians.

Who This Course Is For

This vestibular physical therapy course is designed for rehabilitation and front-line clinicians who routinely see dizzy patients and want to improve their assessment skills.

Target professionals include:

• Physical therapists and physiotherapists working in outpatient, acute care, ER consult, or neuro rehab settings

• Vestibular therapists and clinicians focusing on dizziness and balance disorders

• Chiropractors and manual therapists seeing patients with neck-related dizziness, vertigo, or imbalance

• Athletic therapists and sports medicine clinicians managing concussion and vestibular-related symptoms

• Physical and occupational therapists involved in balance, falls prevention, and vestibular rehab

• Emergency or urgent-care clinicians interested in structured bedside dizziness examination (where scope and regulations allow)

The course is best suited to clinicians with some experience in basic neurologic and vestibular assessment. However, the training also reviews fundamentals in physiology and examination technique, allowing motivated beginners to participate and follow along.

Why Clinicians Struggle with Dizziness Assessment

Dizziness remains one of the most challenging complaints for clinicians due to overlapping symptoms and a wide differential diagnosis. Many practitioners lack confidence when evaluating these patients.

Common challenges include:

• Complexity of vestibular anatomy and physiology, with numerous peripheral and central disorders presenting similarly

• Difficulty distinguishing stroke vs vestibular neuritis in patients with acute vestibular syndrome, especially when neurologic signs are subtle

• Limited exposure to structured vestibular assessment and HINTS testing in entry-level PT, OT, and chiropractic programs

• Time pressure in busy clinical settings, leading to over-reliance on imaging rather than targeted bedside tests

• Fear of missing stroke, which can cause clinicians to either over-refer or under-recognize dangerous presentations

• Uncertainty about which medications or symptoms indicate central vertigo versus peripheral conditions

This course is designed explicitly to remove ambiguity around the HINTS exam, break the technique into simple steps, and link findings to clinical decision-making algorithms.

Course Overview

This Embodia course is fully online and self-paced, featuring streaming video modules with extended access. The training includes clinical demonstration videos, case-based teaching, and practical examinations of technique.

Course structure and teaching methods:

• Brief review of acute vestibular syndrome and dizziness differential diagnosis

• Detailed instruction on each HINTS component with step-by-step demonstrations

• Interpretation of findings using clinical reasoning and case examples

• Integration into broader vestibular clinical examination, including when to refer and when to begin vestibular rehabilitation

• Emphasis on practical instruction with real patient scenarios

The course prioritizes evidence-informed clinical reasoning while keeping content accessible. It sits within Embodia’s vestibular physical therapy course library, allowing learners to continue building skills with additional vestibular rehab, concussion, and balance training modules.

Upon completion, participants receive certification documentation. Prerequisites are minimal - prior basic knowledge of neurologic screening is helpful but not required.

Learning Objectives

On completion of this Embodia vestibular physical therapy course, participants will be able to:

1. Describe the pathophysiology and clinical presentation of acute vestibular syndrome and its common central and peripheral causes

2. Perform the Head Impulse, Nystagmus, and Test of Skew components of the HINTS exam safely and correctly

3. Interpret HINTS findings to differentiate probable central vs peripheral vertigo patterns and recognize when the test is inconclusive

4. Identify red flags that mandate urgent neuroimaging or medical referral, even when the HINTS test appears peripheral

5. Integrate HINTS findings with history, neurologic screening, and gait assessment to refine the dizziness differential diagnosis

6. Evaluate patients presenting with acute continuous vertigo using a systematic approach

7. Communicate HINTS findings effectively in interprofessional teams with neurology, emergency medicine, or primary care