5. Sensitivity to Light and Noise: Heightened Perception Following mTBI
Light and noise sensitivity are common symptoms following a concussion and can be quite debilitating for the affected individual. Essentially, the brain’s regular processing of sensory stimuli gets disrupted due to the injury, leading to an abnormal or heightened response to light and noise.
Light sensitivity, also known as photophobia, can make it difficult for individuals to tolerate bright light or sunlight. They may find themselves squinting or closing their eyes in brightly lit environments, or may experience a headache or eye strain from exposure to light. This could impact their daily activities significantly, forcing them to stay in dimly lit environments until the symptom subsides.
Similarly, noise sensitivity, also referred to as hyperacusis, could make seemingly normal levels of sound unbearable. Everyday noises such as a telephone ringing or the hum of a refrigerator may seem louder and more intrusive than before. In some cases, exposure to certain sounds might exacerbate other symptoms such as headaches.
These symptoms can be quite disruptive, limiting the individual’s ability to participate in social activities or work in certain environments. As such, recognizing and addressing these symptoms early can significantly improve the quality of life during recovery. (5)
