10 million Americans undiagnosed with disease that causes fatigue, brain fog and headaches: report
Coronavirus
While the pandemic may be over, its enduring effects are being felt by millions. While most people who test positive for COVID recover within a week or two, some continue to report symptoms — and even develop new ones — months and even years later. Known as long Covid, this debilitating post-infection condition can cause severe fatigue, shortness of breath, chest pain, palpitations, dizziness, depression, brain fog, headaches, menstrual changes, and muscle pain. Previous research estimated that
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