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Most non-hospitalized COVID-19 "long-haulers" at the Northwestern Medicine Neuro COVID-19 Clinic continued to experience symptoms such as brain fog, numbness and tingling, headache, dizziness, blurred vision, tinnitus and fatigue an average of 15 months after disease onset, according to a new study published in Annals of Clinical and Translational Neurology.
Around 15 percent of the world s population suffers from tinnitus, a condition which causes someone to hear a sound (such as ringing or buzzing) without any external source. It s often associated with hearing loss.