The Short Answer Educational content only. Persistent or worsening concussion symptoms warrant medical evaluation. Sudden severe symptoms (worsening headache, vision changes, vomiting, confusion, seizure) require emergency care. Coordinate trigger management strategies with treating providers. Noise flares concussion symptoms through four primary mechanisms (Patricios et al., 2023). Auditory processing dysfunction cannot filter or process sustained sound input. Autonomic noise response amplification produces exaggerated stress response. Central nervous system sensitization amplifies sound perception. Stress activation from noise depletes cognitive reserves. The pattern affects 30-50% of PCS patients. Restaurants, crowds, sustained background noise, sudden loud sounds, and multi-source environments are typical triggers. Custom earplugs, environment modification, graduated exposure, and autonomic regulation prevent flares substantially. Hyperacusis is physiologic, not weakness. Real auditory processing impairment. Most patients improve within 6-12 months. Noise tolerance returns with autonomic recovery. Filtered earplugs preserve speech. Modern filtered plugs reduce volume while preserving conversation clarity. Why Noise Triggers Flares Auditory processing dysfunction. Brain regions processing sound sustain injury producing intolerance to sustained input. Autonomic noise response. Noise stress activates autonomic system producing exaggerated stress response. Central sensitization. Heightened central nervous system sensitivity amplifies sound perception. Stress activation. Sustained noise exposure produces ongoing stress depleting reserves. Filter dysfunction. Inability to filter background noise from foreground sound producing cognitive overload. Vestibular interaction. Audio-vestibular interaction amplifies dizziness with noise. Common Noise Triggers Restaurants. Combined conversation, kitchen noise, music, hard surfaces. Major trigger. Crowds and parties. Multi-source overlapping conversation overwhelming. Open offices. Sustained background noise and conversation triggering. Sports events and concerts. Severe volume and sustained exposure. Children's environments. Schools, playgrounds, family gatherings. Construction or machinery noise. Sustained mechanical noise. Traffic noise. Sustained vehicular noise during commute. Sudden loud sounds. Door slams, car horns, dropped objects triggering startle and flare. How to Reduce Noise Triggers Filtered earplugs. Loop Quiet, Etymotic ER-20, Westone TRU custom for daily use. Custom audiologist plugs. Custom-molded plugs for severe hyperacusis. Multiple filter levels. Noise-canceling headphones. Active noise cancellation for travel and severe situations. Strategic seating. Corner seating reducing noise reflection. Away from speakers, kitchens, entrances. Time-limited attendance. Brief attendance with planned departure prevents overstay flares. Quiet venue selection. Choose quieter restaurants, off-peak times, less crowded options. Home sound modifications. Soft furnishings, rugs, curtains reduce reverberation. White noise masking. Consistent background sound masks sudden noises. Avoid severe triggers. Concerts, sports events, dance clubs during recovery. Earplug Use Strategy Situational use, not constant. Constant earplug use produces auditory deprivation worsening hyperacusis. Filtered plugs for daily life. Loop Quiet or Etymotic for restaurants, shopping, social events. Higher filter for severe environments. Custom plugs with 25 dB filter for concerts, sports. Carry consistently. Always-available plugs enable strategic use. Clean regularly. Weekly cleaning maintains performance. Replace at 3-5 years. Material degradation affects performance. Graduated Noise Exposure Start in quiet environments. Initial tolerance in quiet spaces. Add brief moderate exposure. 15-30 minute moderate-noise sessions. Build duration before intensity. Longer quiet environments before louder ones. Track symptom response. Hold or reduce if symptoms worsen. Build to normal social tolerance. Goal includes restaurant and social tolerance. When Noise Sensitivity Warrants Evaluation Persistent severe sensitivity beyond 6 weeks. Warrants audiology evaluation. Hearing loss accompanying sensitivity. Combined symptoms warrant audiology evaluation. New tinnitus development. Ringing or buzzing warrants evaluation. Worsening over time. Progressive worsening warrants specialized care. Significant functional impairment. Inability to function in normal environments warrants specialized hyperacusis evaluation. Supporting Mobility Routine These exercises support autonomic regulation affecting noise tolerance. JME 155 Diaphragmatic breathing supports vagal tone and parasympathetic regulation reducing trigger response amplification. 10 breaths every 60-90 minutes. JME 14 Chin tucks reduce upper cervical tension contributing to trigger-induced headaches and dizziness. 10 repetitions with 5-second holds. JME 1 Cervical rotation supports cerebral blood flow and proprioceptive input affecting symptom threshold tolerance. 10 repetitions each direction. JME 150 Thoracic rotation restores breathing depth shallow during stress responses and trigger exposure. 8 repetitions per direction. Start your 3-day free trial for joint-specific mobility programs that support nervous system regulation during PCS trigger management. Common Mistakes With Noise and Concussion Constant earplug use. All-day plugs produce auditory deprivation worsening hyperacusis. Complete noise avoidance. Total avoidance prevents tolerance building. Pushing through severe exposure. Unprotected concert or sporting event attendance produces severe flares. Skipping audiologist consultation. Audiology evaluation identifies treatable contributors. Ignoring sleep environment. Bedroom noise affects sleep extending symptoms. How long does noise sensitivity last after concussion? Most patients improve substantially within 6-12 months. Mild cases resolve in 1-3 months. Severe hyperacusis extends 12-24 months in some patients. 20-30% retain residual sensitivity requiring continued strategic protection. Should I avoid restaurants entirely? No, with strategic accommodations. Choose quieter restaurants, off-peak times, corner seating, filtered earplugs, time-limited attendance. SoundPrint app identifies quieter venues. Complete avoidance produces isolation extending recovery. Will custom earplugs help noise flares? Yes, for severe hyperacusis. Custom audiologist-molded plugs provide superior fit and personalized filter selection. Multiple filter levels for different situations. Audiologist evaluation supports plug selection and hyperacusis treatment. Why do sudden noises bother me more than sustained noise? Sudden loud sounds trigger startle response activating sensitized autonomic pathways. Startle response amplifies symptoms more than sustained tolerable noise. White noise masking reduces startle vulnerability. Hyperacusis therapy reduces startle sensitivity. When should I see an audiologist? See an audiologist for persistent severe sensitivity beyond 6 weeks, accompanying hearing loss, new tinnitus development, worsening over time, or significant functional impairment. PCS-aware audiologists provide specialized hyperacusis evaluation and treatment. References Patricios, J. S., et al. (2023). Consensus statement on concussion in sport: the 6th International Conference on Concussion in Sport, Amsterdam, October 2022. British Journal of Sports Medicine, 57(11), 695-711. PubMed Silverberg, N. D., et al. (2020). Management of concussion and mild traumatic brain injury: a synthesis of practice guidelines. Archives of Physical Medicine and Rehabilitation, 101(2), 382-393. PubMed