Tinnitus Handicap Inventory: Understanding Your THI Score

If you have seen an audiologist or ENT specialist for tinnitus, you may have been asked to complete a questionnaire called the Tinnitus Handicap Inventory (THI). Developed by Newman, Jacobson, and Spitzer in 1996, the THI is the most widely used standardized instrument for measuring how much tinnitus affects your daily life. It has been validated in over 20 languages and is the standard outcome measure in most tinnitus clinical trials.

Understanding your THI score — what it means, how it compares to other assessment tools, and how to track meaningful changes over time — puts you in a stronger position to communicate with your healthcare team and evaluate whether treatments are actually working.

What Is the THI?

The THI consists of 25 questions that assess the physical, emotional, and functional impact of tinnitus on daily life. Each question is answered with "Yes" (4 points), "Sometimes" (2 points), or "No" (0 points). The total score ranges from 0 to 100, with higher scores indicating greater handicap.

Questions cover areas including:

• Difficulty concentrating due to tinnitus
• Interference with sleep
• Impact on social activities and relationships
• Frustration, anger, and emotional distress
• Feeling of loss of control
• Interference with work or household responsibilities
• Avoidance of quiet environments

The THI takes approximately 5–10 minutes to complete. It is designed to be self-administered — you do not need a clinician present. The simplicity and brevity of the instrument are part of its utility: it can be repeated at regular intervals to track changes over time without placing significant burden on the patient.

Scoring and Severity Grades

Your total THI score maps to one of five severity grades, as defined by the original validation study (Newman et al., 1998):

• Grade 1: Slight (0–16 points). Tinnitus is perceived only in quiet environments. It causes minimal interference with daily activities. Many people in this range may not seek clinical treatment.
• Grade 2: Mild (18–36 points). Tinnitus is easily masked by ambient sounds and can be forgotten during activities that require concentration. It may interfere with sleep in quiet bedrooms but does not significantly impact work or social function.
• Grade 3: Moderate (38–56 points). Tinnitus is noticed even in the presence of background noise. It interferes with sleep and concentration regularly. Patients in this range often report difficulty with quiet activities like reading or relaxation. Sound therapy and CBT are typically recommended at this severity level.
• Grade 4: Severe (58–76 points). Tinnitus is almost always perceived and significantly impacts quality of life. Sleep is chronically disrupted. Concentration is substantially impaired. Patients often report anxiety, depression, and social withdrawal.
• Grade 5: Catastrophic (78–100 points). Tinnitus dominates all aspects of daily life. Patients may be unable to work, maintain relationships, or perform basic activities without extreme distress. This severity level typically warrants urgent multidisciplinary intervention including psychiatric evaluation.

Your THI score provides a standardized measure that helps clinicians assess severity and track treatment progress objectively.

Tracking your tinnitus daily provides data between THI assessments. Lushh's daily tracker and PDF reports complement your THI scores with granular day-to-day data →

THI Subscales Explained

The 25 THI questions are grouped into three subscales that provide more specific information about how tinnitus affects you:

Functional Subscale (11 questions, 0–44 points)

Measures how tinnitus interferes with mental and social activities. Questions address concentration, reading comprehension, work performance, social engagement, and household responsibilities. A high functional subscale score suggests that tinnitus is significantly impairing your ability to carry out daily tasks.

Emotional Subscale (9 questions, 0–36 points)

Measures the emotional impact of tinnitus. Questions address frustration, anger, anxiety, depression, feeling of despair, and sense of loss of control. A disproportionately high emotional subscale score (relative to the functional subscale) may indicate that the reaction to tinnitus is more problematic than the tinnitus itself — a pattern that responds particularly well to CBT intervention.

Catastrophic Subscale (5 questions, 0–20 points)

Measures the most severe reactions to tinnitus, including hopelessness, perceived inability to escape the condition, and feeling that the situation is beyond coping capacity. Elevated catastrophic subscale scores should be flagged for mental health evaluation, as they may indicate risk for severe depression or suicidal ideation.

THI vs. TFI vs. VAS

Several standardized instruments are used in tinnitus assessment. Understanding the differences helps you interpret results across different clinical settings:

THI (Tinnitus Handicap Inventory)

25 questions, 0–100 scale. Measures overall tinnitus handicap. The most widely used and most extensively validated instrument. Best for initial severity assessment and broad tracking. Limitations: may not be sensitive enough to detect small changes from treatment.

TFI (Tinnitus Functional Index)

25 questions, 0–100 scale. Developed by Meikle et al. (2012) specifically to be responsive to treatment-related changes. Includes eight subscales: intrusiveness, sense of control, cognitive, sleep, auditory, relaxation, quality of life, and emotional. A change of 13+ points is considered clinically meaningful on the TFI (compared to 10+ on the THI). Better for tracking treatment outcomes.

VAS (Visual Analog Scale)

Single question: "Rate your tinnitus severity from 0 (no tinnitus) to 10 (worst imaginable)." Quick and easy, suitable for daily tracking. Limitations: does not capture the multidimensional nature of tinnitus impact (emotional, functional, sleep, concentration). Best used as a supplement to THI/TFI, not a replacement.

Lushh uses a VAS-style daily rating for quick daily tracking, while supporting periodic THI-level assessments for comprehensive evaluation. This combination of daily granularity and periodic depth provides the most complete picture for you and your clinician.

Clinically Meaningful Change

Not every score change on the THI represents a real difference in your experience. Random day-to-day variation in how you feel when completing the questionnaire can produce score fluctuations of 6–8 points without any actual change in tinnitus severity.

Research has established that a change of 10 or more points on the THI is the threshold for clinically meaningful change — meaning the score difference reflects a genuine change in how tinnitus affects your life, not just measurement noise. This threshold is called the Minimal Clinically Important Difference (MCID).

• 10–19 point improvement: Small but clinically meaningful improvement. You are likely noticing that tinnitus interferes less with some activities.
• 20+ point improvement: Large clinically meaningful improvement. Often represents a shift in severity category (e.g., from severe to moderate). This is the level of change that most clinical trials aim to achieve.
• Shift of one severity grade: Moving from Grade 4 (severe) to Grade 3 (moderate), for example, is a qualitative improvement in daily functioning and represents treatment success by most clinical standards.

When evaluating treatment effectiveness, always compare your current THI score to your baseline score (before starting treatment), not to your most recent previous score. Tracking patterns over time reveals trends that single assessments cannot.

Tracking Over Time

To get the most value from THI tracking:

1. Take a baseline. Complete the THI before starting any new treatment, therapy, or lifestyle change. This is your reference point.
2. Monthly assessments. Take the THI once per month at approximately the same time of day and in similar conditions. Avoid taking it during a tinnitus spike or on an unusually good day.
3. Record conditions. Note anything unusual: recent illness, medication changes, stress levels, sleep quality. This context helps interpret score changes.
4. Graph your results. A simple line graph of THI scores over months makes trends visible that individual numbers obscure. Lushh generates these progress charts automatically.
5. Share with your provider. Bring your tracked scores to medical appointments. A documented trajectory is far more informative than a single snapshot score.

Tracking THI scores monthly reveals treatment trends. A 10+ point sustained improvement indicates clinically meaningful progress.

When to Share with Your Doctor

Your THI score is a communication tool. Specific situations where sharing your score (or score history) is especially valuable:

• Initial evaluation. Bring a completed THI to your first audiology or ENT appointment. It immediately communicates severity and helps the clinician prioritize treatment.
• Treatment reviews. If you are in therapy (CBT, TRT, sound therapy), periodic THI scores demonstrate whether the treatment is working objectively.
• Medication discussions. If you are considering or adjusting medication, baseline and follow-up THI scores help assess medication impact.
• Disability evaluations. For VA disability claims or workplace accommodation requests, documented THI scores provide standardized evidence of tinnitus severity.
• Score increases. If your THI score increases by 10+ points from your baseline, report this to your provider. It may indicate that current management is insufficient or that a new factor is worsening your tinnitus.
• Catastrophic subscale elevation. If your catastrophic subscale score is high (15+/20), prioritize discussing this with a mental health professional. These questions assess hopelessness and despair that may warrant intervention beyond audiological management.

Disclaimer: This article is for informational purposes only and does not constitute medical advice. The THI is a screening and tracking tool, not a diagnostic instrument. Always consult your healthcare provider for diagnosis and treatment of tinnitus.