Hyperacusis in Long COVID: Evaluation and Management
Hyperacusis associated with long COVID should be evaluated through symptom-driven assessment starting at 4 weeks post-infection, with management centered on multidisciplinary rehabilitation, patient education, and symptom-specific supportive care, recognizing that no evidence-based specific treatment currently exists for this condition. 1, 2
Prevalence and Clinical Context
- Hyperacusis occurs in approximately 26.1% of patients with confirmed COVID-19, representing one of the most common otorhinolaryngological manifestations of long COVID. 3
- Patients with confirmed COVID-19 have 2.2 times higher odds of developing hyperacusis compared to non-COVID populations (OR=2.2, p<0.001). 3
- Self-reported otorhinolaryngological symptoms in long COVID often exceed objective testing findings, with confirmed prevalence estimates around 20% when rigorously assessed. 2
- Hyperacusis does not occur in isolation but as part of a multisystemic illness affecting multiple organ systems. 4, 2
Evaluation Timeline and Initial Assessment
Begin evaluation at ≥4 weeks after acute COVID-19 infection, regardless of whether the patient had documented testing or required hospitalization. 1
Symptom Assessment Domains
- Assess decreased sound tolerance to ordinary environmental sounds, specifically asking whether "loudness of sounds that are normal to other people bothers them more." 3
- Evaluate co-occurring symptoms across physical, cognitive, psychological, and psychiatric domains, particularly:
Problem Domain Identification
- Explore fear responses, reduced quality of life, and physical reactions to sound as the most frequently reported hyperacusis-related problems. 6
- Screen for sleep difficulties and despondency, which commonly cluster together with hyperacusis. 6
- Conduct thorough patient interviews beyond standardized questionnaires, as current hyperacusis questionnaires capture only some problem domains. 6
Diagnostic Workup
Audiological Testing
- Perform Loudness Discomfort Level (LDL) testing as the primary objective measure, though recognize its limitations in sensitivity and specificity. 7, 8
- Administer the Hyperacusis Questionnaire for standardized symptom quantification. 8
- Conduct comprehensive audiological evaluation including pure-tone audiometry to assess for concurrent hearing loss (present in 25.7% of COVID patients). 3
Functional Assessment
- Perform lying and standing blood pressure and heart rate measurements using a 3-minute active stand test (extend to 10 minutes if postural tachycardia syndrome suspected), as dysautonomia frequently co-occurs with hyperacusis in long COVID. 1
- Document symptom triggers, severity patterns, and impact on daily activities through symptom diaries or tracking applications. 1
Laboratory and Imaging
- Tailor blood tests to clinical presentation, considering:
- Full blood count
- C-reactive protein (CRP)
- Ferritin
- Thyroid function tests 1
- Obtain chest radiograph if respiratory symptoms are present, though normal imaging does not exclude pathology. 1
Management Strategies
Patient Education and Self-Management
Provide written guidance covering:
- Realistic goal-setting for symptom management 1
- Sound exposure strategies (avoiding both overprotection and excessive exposure) 8
- Contact pathways for worsening symptoms 1
- Access to support groups and online resources 1
- Social care and financial assistance options 1
Multidisciplinary Rehabilitation Approach
Develop an individualized rehabilitation plan incorporating:
- Physical rehabilitation tailored to avoid postexertional malaise/symptom exacerbation (PEM/PESE), as overly intense activity can worsen symptoms. 5
- Psychological support addressing fear responses, anxiety related to sound exposure, and despondency. 6, 5
- Fatigue management strategies using energy conservation techniques. 1, 5
Therapeutic Interventions Under Investigation
- Cognitive Behavioral Therapy (CBT) is the most commonly recommended intervention (by 80% of audiologists), though it falls outside audiology scope of practice and requires referral to appropriate mental health professionals. 7, 8
- Tinnitus Retraining Therapy (TRT) has been evaluated in hyperacusis populations, though evidence specifically for long COVID-associated hyperacusis is lacking. 8
- Sound therapy devices may be considered, but evidence for effectiveness in long COVID hyperacusis is insufficient. 8
- Pharmacological therapy has no established role for hyperacusis specifically; any medication use should follow standard indications with careful attention to potential worsening of other long COVID symptoms. 8, 5
Referral Pathways
- Refer to integrated multidisciplinary assessment services starting at 4 weeks post-infection when symptoms persist or alternative diagnoses require evaluation. 1
- Establish care team including primary care, audiology, otolaryngology, rehabilitation medicine, and mental health specialists based on symptom constellation. 1, 5
- Consider referral to specialized long COVID clinics or centers of excellence when available. 4
Critical Caveats and Pitfalls
- Avoid dismissing patient symptoms even when objective testing is normal, as validation of the patient's experience is essential given the frequent discordance between self-reported and objectively confirmed symptoms. 2, 5
- Do not recommend graded exercise therapy without careful consideration of PEM/PESE risk, as overly aggressive activity can cause symptom exacerbation and potential harm. 4, 5
- Recognize the lack of evidence-based specific treatments—current management is supportive and symptom-based, and clinicians should deliver recommendations with humility given persistent unknowns. 2, 8, 5
- Screen for red-flag symptoms requiring urgent referral: severe hypoxemia, cardiac chest pain, or signs of Multisystem Inflammatory Syndrome in Children (in pediatric cases). 1
- Address barriers to care including time constraints, reimbursement limitations, and the need for culturally competent approaches, particularly for marginalized populations disproportionately affected by long COVID. 4, 7
Activity and Work Reintegration
- Discuss phased return to school or work with accommodations tailored to symptom severity and fluctuating nature of long COVID. 1
- Identify suitable workplace accommodations addressing sound exposure triggers and provide necessary documentation for disability considerations under the Americans with Disabilities Act. 5
- Recommend occupational therapy when workplace reintegration efforts are unsuccessful. 5
Follow-Up and Monitoring
- Establish individualized follow-up intervals based on symptom severity and trajectory, recognizing that some patients improve over time while others have episodic or progressive symptoms. 4, 1
- Use symptom tracking to monitor response to interventions and adjust management accordingly. 1
- Maintain awareness that hyperacusis in long COVID may represent a lifelong disability if no effective interventions are identified. 4