What is the appropriate evaluation and management for a female patient who feels like she got off a moving boat while the room is not spinning?

Mal de Débarquement Syndrome: Evaluation and Management

This patient is describing mal de débarquement syndrome (MdDS), characterized by a persistent rocking or swaying sensation without true vertigo, and should be evaluated with a focused history to exclude other vestibular disorders, followed by referral for specialized vestibular rehabilitation using optokinetic stimulation and head-roll readaptation techniques.

Clinical Recognition and Differential Diagnosis

The key distinguishing feature here is the non-vertiginous quality of the dizziness—the patient feels motion (like being on a boat) but the room is not spinning. This pattern does not fit benign paroxysmal positional vertigo (BPPV), which produces brief episodes of true vertigo triggered by head position changes 1.

Essential History Elements

• Timing: MdDS symptoms begin after passive motion ceases (cruise, flight, car travel) and persist continuously for weeks to years, unlike BPPV which lasts seconds or Ménière's disease which lasts 20 minutes to 24 hours 12
• Quality: Patients describe persistent rocking, swaying, or bobbing sensations—feeling like they are "still on the boat" 3
• Associated symptoms: Increased light sensitivity, difficulty walking on patterned floors, ear fullness, head pressure, anxiety, and depression are common 4
• Demographics: Predominantly affects premenopausal women 5

Critical Red Flags to Exclude

Before diagnosing MdDS, rule out dangerous causes by assessing for 1:

• New neurologic deficits (weakness, sensory changes, dysarthria, dysphagia, diplopia)
• Severe sudden-onset headache
• Inability to ambulate independently
• Acute hearing loss with vertigo lasting >24 hours

Physical Examination Strategy

Perform positional testing to exclude BPPV, even though the history suggests otherwise 1:

• Dix-Hallpike maneuver: Should be negative (no torsional up-beating nystagmus with 5-20 second latency) 1
• Supine Roll Test: Should be negative for horizontal nystagmus 1
• If positional testing triggers symptoms but produces no nystagmus, this supports MdDS rather than BPPV

Do not obtain imaging for isolated MdDS without neurologic signs—CT positivity rate is only 2% for dizziness in emergency settings 1.

Audiologic and Vestibular Testing Indications

Order audiogram and vestibular function testing only if 1:

• Fluctuating hearing loss accompanies episodic symptoms (suggests Ménière's disease rather than MdDS)
• Asymmetric hearing loss is present (evaluate for vestibular schwannoma)
• Symptoms persist despite appropriate treatment

Evidence-Based Treatment Approach

First-Line: Vestibular Rehabilitation with Optokinetic Stimulation

The most effective treatment is "roll readaptation" using full-field optokinetic stimulation 354:

• Patients view rotating full-field visual surrounds while rhythmically rolling their head for up to 4 minutes at a time
• Treatment typically consists of 3-5 sessions over 4-5 days 35
• Initial success rates: 78% in classic MdDS (motion-triggered) and 48% in spontaneous MdDS show >50% symptom reduction 5
• One-year outcomes: 52% of classic and 48% of spontaneous patients maintain significant improvement; complete remission occurs in 27% of classic and 19% of spontaneous cases 5

Treatment Timing Matters

Early diagnosis and treatment significantly improve outcomes—success is inversely correlated with symptom duration and patient age 5. Refer promptly rather than waiting to see if symptoms resolve spontaneously.

Alternative Treatment Modalities

If specialized optokinetic equipment is unavailable, virtual reality goggles with optokinetic stripe programs show promise as a more accessible alternative 4. A pilot study demonstrated immediate improvement in all 5 patients treated, with only 1 recurrence at 2-month follow-up 4.

Additional treatment options with variable success include 6:

• Specific vestibular rehabilitation protocols
• Neuromodulating stimulation
• Pharmacologic management with neurotropic drugs

Safety Counseling

53% of elderly patients with vestibular disorders have fallen in the past year 1. Counsel on:

• Home safety measures
• Activity modification
• Need for supervision until symptoms resolve
• Fall-risk assessment, particularly in older adults 1

Common Pitfalls

• Misdiagnosing as BPPV: The absence of true spinning vertigo and the continuous (not episodic) nature distinguish MdDS from BPPV
• Delaying referral: Waiting months before specialized treatment reduces long-term success rates 5
• Prolonged travel after treatment: Air or car travel immediately after successful treatment commonly triggers symptomatic reversion 5
• Underestimating psychological impact: The persistent nature causes significant work and daily life disruptions, with patients experiencing fear of recurrence and emotional fatigue 7