Last March, Satoshi Matsuda's car was rear-ended while he sat inside waiting at a traffic light. Immediately afterward, he recalled feelings of dizziness and nausea.After the accident, the man, a 65-year-old carpenter from Hiroshima in western Japan, began confusing his job orders and became increasingly irritable about everything. He has ended relationships with longtime friends due to his persistent health condition.Matsuda (not his real name) is one of some 1.35 million people in Japan who suffer from mild traumatic brain injury or MTBI, most commonly manifesting as concussion. Symptoms …READ FULL ARTICLE
