The Dizziness Handicap Inventory (DHI) is scored by assigning 4 points for every “yes” response, 2 points for every “sometimes,” and 0 points for every “no.” You then add up all 25 items for a total score ranging from 0 to 100, where higher scores indicate greater perceived handicap from dizziness.
Point Values for Each Response
Every item on the DHI uses the same three-option scale:
- Yes = 4 points
- Sometimes = 2 points
- No = 0 points
There are no reverse-scored items, so the math is straightforward. Multiply the number of “yes” answers by 4, multiply the number of “sometimes” answers by 2, and add those together. The minimum possible score is 0 (no perceived handicap) and the maximum is 100 (severe perceived handicap across all 25 questions).
Total Score Severity Ranges
The total DHI score is generally interpreted using these cutoffs:
- 0 to 30: Mild handicap
- 31 to 60: Moderate handicap
- 61 to 100: Severe handicap
These ranges reflect how much dizziness is interfering with daily life, not the severity of the underlying vestibular condition itself. Someone with a relatively minor balance disorder can still score high if their dizziness causes significant anxiety or limits their activities.
Scoring the Three Subscales
Beyond the total score, the DHI breaks down into three subscales that capture different dimensions of how dizziness affects a person. Each subscale is scored independently by adding up only the items that belong to it.
Physical Subscale (7 Items, Max 28 Points)
Items 1, 4, 8, 11, 13, 17, and 25 make up the physical subscale. These questions ask about specific movements and positions that provoke dizziness, like looking up, turning over in bed, or bending over. A high physical subscale score suggests dizziness is closely tied to head and body movements.
Functional Subscale (9 Items, Max 36 Points)
Items 3, 5, 6, 7, 12, 14, 16, 19, and 24 cover the functional domain. These questions focus on how dizziness limits everyday activities: walking down a grocery store aisle, doing household chores, going out to dinner, or performing job duties. This subscale captures practical, real-world restrictions.
Emotional Subscale (9 Items, Max 36 Points)
Items 2, 9, 10, 15, 18, 20, 21, 22, and 23 measure the emotional toll. They address frustration, fear of being alone, embarrassment, depression, worry about how others perceive the problem, and difficulty concentrating. A disproportionately high emotional score compared to the physical score can signal that anxiety or avoidance behavior is amplifying the handicap beyond the physical symptoms.
What Counts as a Meaningful Change
If you’re using the DHI to track progress over time, the clinically meaningful threshold is an 18-point change. This number, established by the original developers Jacobson and Newman, represents the minimum improvement needed to be confident the change reflects a real difference rather than normal score fluctuation. So if someone starts vestibular rehabilitation with a score of 54 and later scores 34, that 20-point drop represents genuine, meaningful improvement. A shift of only 6 or 8 points, while encouraging, falls within the range that could simply reflect day-to-day variability.
Worked Example
Suppose a patient answers “yes” to 8 questions, “sometimes” to 7 questions, and “no” to 10 questions. The calculation would be:
(8 × 4) + (7 × 2) + (10 × 0) = 32 + 14 + 0 = 46
A total score of 46 falls in the moderate handicap range. To get the subscale scores, you would go back and identify which of those responses belong to the physical, functional, and emotional item groups, then add up each group separately. If most of the “yes” answers clustered in the emotional items, for example, that tells a different clinical story than if they clustered in the physical items.
Tips for Accurate Scoring
The DHI is designed to be self-administered, meaning the patient fills it out on their own without a clinician interpreting the questions for them. This keeps responses consistent across different settings. Most people complete it in under 10 minutes. A few practical points to keep in mind when scoring:
Check for blank items. The scoring system assumes all 25 questions are answered. If a patient skips items, the total score will underrepresent their actual handicap. Some clinicians handle missing items by prorating the score (scaling it proportionally), but the standard approach is to have the patient complete every item.
The DHI measures perceived handicap at the time of completion. Scores can shift substantially depending on whether someone is in an active episode of dizziness or a quiet period, so noting the date and the patient’s current symptom status alongside the score adds useful context for tracking change over time.